59 Blue Flowers: Complete List With Names and Pictures

Scientific name: Symphyotrichum oolentangiense

The first blue flower on our list is the azure aster. This plant forms branching foliage throughout most of the summer before bursting into gorgeous, blue, daisy-like flowers that are simply captivating! These blooms appear from late summer until the first frost of the year.

Azure asters thrive in USDA zones 3 to 8. To encourage the best blooms, provide them with full sun, though they can tolerate some shade. They prefer dry, sandy, or rocky soil and do not do well in overly wet conditions. Slightly acidic soil, with a pH between 5.5 and 7.5, is ideal for their growth.

Balloon Flower 

Scientific name: Platycodon grandiflorus 

The balloon flower is an easy-to-grow perennial that gets its name from the puffed-up, balloon-like buds that open into star-shaped flowers. It is planted in spring when the weather begins to warm. This plant blooms throughout the summer and is self-seeding, though it is not an aggressive grower. Balloon flowers are resistant to pests and diseases and will return each year, brightening your garden with their showy blooms.

You can grow balloon flowers from seeds or nursery plants. Taller plants may need staking to keep them upright. While they prefer full sunlight, they also tolerate partial shade, which may be necessary if they are exposed to intense afternoon sun. These flowers thrive in loamy, well-draining soil. Keep the soil moist but avoid overwatering. They grow well in USDA zones 3 to 8.

Bird-Bill Dayflower 

Scientific name: Commelina dianthifolia  

The bird-bill dayflower is a striking plant with bright blue blooms. It gets its name from its flowers, which appear at dawn and wilt by midday. Each bloom features three petals shaped somewhat like mouse ears.

These plants are extremely hardy, often considered weeds. They have thick, water-filled stems, with new leaves and branches sprouting from the nodes. Flowering occurs through summer and early autumn. While bird-bill dayflowers thrive in full sun, they can also grow well in partially shaded conditions.

They form tubers that allow them to return year after year. They prefer moist soil but can also tolerate rocky conditions. Propagation is done by seed, typically planted in mid-spring if using a greenhouse. These flowers work well in rock gardens, borders, and containers. They grow best in USDA zones 6 to 9.

Bluebell 

Scientific name: Hyacinthoides non-scripta 

Also called the English bluebell, this perennial produces gorgeous, bell-shaped blue flowers. Their sweet fragrance attracts many pollinators, making them a great choice if you enjoy butterflies and birds in your garden.

Bluebells are typically found in shady habitats, though they still benefit from sunlight. They thrive in partially shaded areas with dappled light. If you live in a woodland area, they will grow easily in your garden, though they can adapt to other environments as well. Blooming from early to late spring, their flowers disappear by midsummer.

These hardy plants are easy to grow, naturally resisting pests and disease. Once established, they require little maintenance. Bluebells prefer moist, well-draining soil and thrive in USDA zones 4 to 10. However, it’s important to note that the entire plant is poisonous—do not attempt to eat any part of it!

Blue Daisy 

Scientific name: Felicia amelloides 

Blue daisies are herbaceous perennials that grow quickly, producing the classic daisy blooms we know and love—only in a beautiful shade of blue! The flowers feature a bright yellow center. These plants thrive in full sun and are relatively easy to grow, requiring consistently moist yet well-draining soil. They tend to perform best in temperate climates rather than extreme heat or cold.

Blooming from June to August, blue daisies provide a full summer of vibrant color. They are also a favorite of many butterfly species, so you can enjoy their fluttering visitors throughout the season.

These plants are fairly hardy and grow well in USDA zones 8 to 11. They can be started from seed just before the final spring frost, ensuring blooms throughout the warmer months. 

Blue False Indigo 

Scientific name: Baptisia australis 

Blue false indigo is a robust perennial that grows two to five feet high, producing purplish-blue flowers. If planted in full shade, it will need extra support, so staking may be necessary. This plant thrives in full sun or partial shade and, due to its height, makes a striking addition when planted along fences or with companion plants. Blooming throughout spring, it adds a vibrant touch to the landscape.

To propagate, collect seeds from the seed pods in late summer. However, keep in mind that it may take a few years for the plant to flower. Blue false indigo is highly resilient, tolerating drought and poor soil—demonstrating its ability to thrive in a variety of conditions. Trimming the foliage after blooming helps maintain its rounded shape. A hardy plant, it grows well in USDA zones 3 to 9.

Blue Flax 

Scientific name: Linum lewisii 

Native to California, blue flax is a short-lived wildflower that grows at an angle rather than straight up. It produces numerous flowers, each blooming for a single day before wilting. Flowering continues through late spring and summer.

Blue flax requires moderate watering and plenty of sunlight to thrive. The plant self-germinates, producing a good amount of flax, though you can also plant it manually as needed.

Interestingly, blue flax grows best in rocky, sandy, or otherwise poor soil. Richer soil can be detrimental, as the plants must compete with others that thrive in nutrient-dense conditions—most of which will outgrow them.

These flowers are best suited for wilder gardens, such as woodland landscapes, rather than neatly manicured flower beds. Blue flax grows well in USDA zones 3 to 9.

Blue Hibiscus 

Scientific name: Alyogyne huegelii 

Blue hibiscus flowers are related to mallow plants—they’re not true hibiscuses, nor are they perfectly blue, but they’re fantastic all the same! This plant is rarely affected by pests or diseases, making it an excellent choice for organic gardens.

The flowers bloom several times throughout the year, from summer through late autumn. Blue hibiscus thrives in full sun and requires well-draining, medium-moisture soil. While it prefers alkaline soil, it also grows well in acidic conditions with little need for fertilizer.

These plants are fairly low-maintenance, which is always a plus. Minimal pruning of older shrubs helps promote new growth. Propagation is done by rooting semi-ripe cuttings in late summer. Once established, blue hibiscus is quite hardy and can become drought-resistant over time. It grows best in USDA zones 9 to 11.

Blue Mist Shrub 

Scientific name: Caryopteris x clandonensis

The blue mist shrub, sometimes called bluebeard, grows between 2 and 3 feet tall, producing showy flowers that delight any gardener. Blooming from late summer until the first winter frost, these flowers are wonderfully aromatic.

They are highly attractive to pollinators such as bees and butterflies. Once established, the plant requires only occasional watering. Blue mist shrubs thrive in full sun, needing at least six hours of sunlight per day, and should be planted in well-draining soil.

Pruning should be postponed until spring, when new leaves begin to emerge. This plant is deciduous in most regions but may remain evergreen in certain climates. Regardless, it grows quickly and will be ready to bloom by summertime. Blue mist shrubs thrive best in USDA zones 6 to 9.

Blue Orchid 

Scientific name: Vanda coerulea 

The blue orchid produces delicate flowers in a faint blue-purple hue, making it a great choice for adding subtle color to your garden. Orchids can be a bit finicky to care for, so some prior knowledge is helpful before attempting to grow them. Blue orchids thrive in hanging planters, so consider providing one for optimal growth.

Native to Northeast India, Myanmar, Thailand, and Southwest China, these orchids require bright, direct sunlight and prefer warm to slightly cooler temperatures. Several varieties of blue orchids can be found in nature.

They need periodic watering from spring through fall but enter a resting phase in winter. Keep the soil moist during the hottest months, gradually reducing watering in autumn. Blue orchids grow best in USDA zones 12 to 13.

Blue Star 

Scientific name: Amsonia tabernaemontana 

The blue star is a delicate plant that produces pale blue star-shaped flowers. These herbaceous perennials make a lovely addition to any garden. They thrive in average, well-draining soil that is slightly moist but can also tolerate some drought.

Blue stars do well in partial shade but prefer full sun. When grown in full sun, they typically require neither pruning nor staking. However, in rich soil, they may become prone to drooping and will need staking for support.

These plants bloom from March through May and grow between two and three feet tall. They are an excellent choice for first-time gardeners, as they require little attention or maintenance. Blue stars can be propagated by seed, as they germinate at a good pace, though flowering will begin in their second year. They grow well in USDA zones 3 to 9.

Bluecrown Passionflower 

Scientific name: Passiflora caerulea 

The bluecrown passionflower is a vigorous vine, spreading 3 to 6 feet and reaching a height of 10 to 25 feet. It features gorgeous, twining tendrils and unique, showy blue flowers. This plant is evergreen in tropical climates but deciduous in regions with cool winters, capable of surviving temperatures as low as 5°F (-15°C). Blooms appear sporadically from early summer through early fall.

Water thoroughly but infrequently. Bluecrown passionflowers thrive in full sun but also do well in partial shade. Ensure the soil is well-draining and that the plant has good airflow to prevent fungal infestations.

This vine prefers loose, sandy, or gravelly soil. Avoid excessive composting, as overly rich soil can inhibit flowering. Bluecrown passionflowers can be propagated by seed or cuttings and grow best in USDA zones 6 to 9. They also produce distinctive-looking fruits, though they are not particularly flavorful.

Blue Violet 

Scientific name: Viola sororia 

The blue violet may be common, but its purple-blue blooms are uniquely spectacular. Its heart-shaped leaves are topped with white-throated blue flowers that bloom in spring, from March to May, with occasional blooms appearing throughout summer. Violets are also purple, but these flowers are wild, and are considered more of a weed.

Blue violets thrive in full sun but can tolerate partial shade. They love water and require moist, well-draining soil to grow at their best. Commonly in southern states, they can be difficult to control if left unchecked, sometimes becoming invasive in certain conditions.

These plants attract plenty of birds and butterflies, putting on a beautiful display when they bloom in spring. Their flowers can be candied to decorate cakes or cookies and are even used in teas. Blue violets remain compact, typically reaching a maximum height of around 8 inches. They grow best in USDA zones 3 to 10.

Chicory 

Scientific name: Cichorium intybus 

Chicory is an annual or biennial plant with showy blue flowers. While sometimes considered a weed and sometimes being invasive in parts of North America, many people cultivate it for its striking beauty. The flowers measure 1 to 1½ inches across, developing 10 to 20 ray florets, with each petal ending in five teeth. They bloom in the morning and close later in the day.

Chicory thrives in full sun and adapts well to most soils, though it prefers gravelly or clay-mixed soil. It also tolerates road salt and alkaline conditions.

These plants require little water and can withstand drought, though keeping the soil slightly moist is beneficial. Chicory is also grown for culinary use, often added to salads or brewed into teas. It grows best in USDA hardiness zones 3 to 8.

Clematis 

Scientific name: Clematis ‘The President’

The clematis is a stunning vine. The variety called ‘The President’ is one that produces blue flowers. These vigorous growers can reach lengths of 10 to 20 feet, though some cultivars are well-suited to small gardens. Clematis thrives when allowed to climb, so provide a trellis with trellis wire to help it adjust.

Plant clematis in spring to give it enough time to establish before winter. It requires consistent watering, especially during its early growth stages. Clematis loves sunlight and needs at least six hours of full sun each day. However, it’s important to keep its roots cool to promote healthy growth.

Clematis grows best in USDA hardiness zones 4 to 7 and can be propagated from seed or cuttings.

Columbine 

Scientific name: Aquilegia caerulea 

Columbines are wonderful garden perennials that produce blue, bell-shaped flowers. They bloom from mid-spring through summer, giving you plenty of time to enjoy their blossoms before autumn arrives. These plants vary in size, typically reaching up to 3 feet tall, though certain dwarf varieties grow no taller than 6 inches.

Columbine flowers love the sun, but will also thrive in part-shade. They prefer well-drained, moderately moist soil of average quality. Their nectar attracts birds, bees, and butterflies, bringing lively activity to your garden.

Easy to grow, columbines are well-suited to most gardens. While individual plants live for about three years, they self-seed readily, ensuring a continuous presence. For the best results, plant columbines in spring. They grow best in USDA zones 3 to 10.

Desert Bluebells 

Scientific name: Phacelia campanularia 

The desert bluebell is an attractive plant that thrives in the soils of California’s deserts. If you live in or near these regions, you can enjoy its bright blue blooms. This annual produces cobalt blue flowers about one inch across and is a favorite of bees, especially bumblebees, making it a great addition to any pollinator-friendly garden.

Growing 6 to 18 inches tall, desert bluebells self-propagate once established. They love full sun and tolerate drought well. Low-maintenance and naturally resistant to pests and disease, they require dry, well-drained, yet fertile soil with a circumneutral pH of 6.8 to 7.2.

These flowers not only attract bees but also draw butterflies, adding even more life to your garden. They grow best in USDA zones 5 to 10.  

Dwarf Morning Glory 

Scientific name: Evolvulus glomeratus

The dwarf morning glory is a gorgeous, herbaceous perennial that produces lavender to blue flowers. These plants adore sunlight, soaking it up all day before closing at night—much like the morning glory! They thrive in organically rich, well-drained soil and grow 1 to 3 feet tall. When properly pruned, they make excellent ground cover.

Blooming from summer through fall, dwarf morning glory is drought-tolerant and a great choice for low-maintenance areas of the garden. It thrives in summer temperatures above 65°F (18°C).

Propagation can be done by seed or softwood cuttings. Deadheading is unnecessary, as the flowers naturally shed spent blooms. However, pruning is recommended to control growth direction and maintain shape. These plants grow best in USDA zones 8 to 11.

ons, pollution, pests, and diseases with ease and does not require specific soil pH. Empire Blue butterfly bushes grow best in USDA zones 5 to 9.

Fairy Thimbles 

Scientific name: Campanula cochlearifolia 

Fairy thimbles are charming members of the bellflower family, growing low to the ground and producing beautiful blue flowers. They reach about 3 to 6 inches in height and spread 1 to 2 feet across. These plants thrive in full sun but also do well in partial shade.

They prefer medium-quality, well-drained soil. However, they tolerate hot, dry conditions well.

Neutral to alkaline soil suits fairy thimbles, provided it is kept moderately moist. These perennials are self-sowing, ensuring their return each year without the need for replanting. Blooming from late spring to mid-summer, they are relatively low-maintenance but grow best in USDA zones 5 to 7.

Forget-Me-Not 

Scientific name: Myosotis scorpioides 

Forget-me-nots are one of the quintessential blue flowers, though you may be surprised to learn that they are considered a weed in some parts of the U.S. Be sure to check local regulations before planting them.

This herbaceous perennial grows 6 to 12 inches tall and spreads 9 to 12 inches across. It enjoys full sun and partial shade, as well as organically rich, moist soil. If preferred, forget-me-nots can also grow in water up to 4 inches deep.

Forget-me-nots are very low maintenance and make a great addition to any garden, as long as their growth is kept in check. Blooming from June to August, they attract butterflies and are generally resistant to most pests. They grow best in USDA zones 5 to 9.

Gentian 

Scientific name: Gentiana acaulis 

Gentian is a much-beloved herbaceous perennial that produces deep, true blue flowers. These plants enjoy the sun but prefer cooler summer conditions. Finding the right balance is key, ensuring they receive enough sunlight for flowering without excessive exposure that may bleach their leaves.

Gentian thrives in gritty, gravel-filled soil, as long as it remains moist and well-drained. It can tolerate occasional drought and adapts well to alkaline soil.

This plant has no serious issues with pests or disease, making it relatively easy to care for, provided its sun needs are managed. Low-growing at just 4 to 6 inches tall, it works well as ground cover. Gentian blooms from May to June and grows best in USDA zones 3 to 7.

Globe Thistle 

Scientific name: Echinops spp.

Globe thistle is an interesting plant to grow, with its spiky leaves and round flower heads in a gorgeous shade of purple-blue. It is a great addition to any garden, especially for those looking for low-maintenance plants.

Its spherical flowers bloom in late summer. Cutting them back after flowering can help maintain the plant’s health and may even encourage another round of blooms—though this isn’t guaranteed.

Globe thistles prefer moist, well-drained soil before they are fully established. Once mature, they tolerate drought well. They are resistant to most pests and diseases, though they can sometimes attract aphids. Growing 2 to 5 feet tall, they require occasional pruning. These plants self-sow easily, returning each year more beautiful than before. Globe thistles thrive in USDA zones 3 to 9.

Glory-of-the-Snow 

Scientific name: Chionodoxa luciliae 

Glory-of-the-snow is a charming plant that blooms from March through April, often emerging through melting snow, hence its name. This low-growing plant makes excellent ground cover, reaching 4 to 6 inches in height and spreading about the same width. It thrives in full sun but also does well in partial shade. Glory-of-the-snow adapts to most soil types as long as the soil is medium-moisture and well-drained.

Though short-lived, with foliage disappearing by late spring, these plants reliably return each year. They have no serious issues with pests or disease, though nematodes can be a nuisance in some parts of the U.S. Glory-of-the-snow pairs beautifully with other early spring bulbs like tulips and daffodils. They grow best in USDA zones 3 to 8.

Grape Hyacinth 

Scientific name: Muscari azureum 

Grape hyacinths are low-growing plants that produce adorable, tiny, bell-shaped flowers clustered like grapes. These fragrant blooms range from light blue to purple-blue. If you’d like to enjoy their perfume, be sure to plant plenty! Winter-hardy and versatile, they make a wonderful addition to almost any garden. Plant them in the fall for blooms in mid-to-late spring the following year.

Grape hyacinths thrive in full sun but also grow well in shady areas. They prefer moist, well-drained soil and are fairly resistant to pests and diseases. While they readily re-seed, proper pruning can help control their spread—though you may never tire of seeing their cheerful blooms. They are perfect for formal beds, rock gardens, pond edges, and containers. Grape hyacinths grow best in USDA zones 4 to 8.

Great Lobelia 

Scientific name: Lobelia siphilitica 

Great lobelias are beautiful perennials that produce showy, lavender-blue flowers. Their stems grow 2 to 3 feet tall and may need staking for extra support. They thrive in moist conditions, often found along streams or rivers. To replicate this in your garden, keep the soil consistently moist. Rich soil is preferred for optimal nutrients. In northern climates, they grow well in full sun to partial shade, while in hotter regions, they benefit from more shade.

These plants bloom from late summer to mid-fall. They tolerate deer, disease, and pests well but do not handle drought, as mentioned. Otherwise, they are fairly low-maintenance. Great lobelia attracts hummingbirds and other birds.

It’s important to note that all parts of this plant are poisonous and can be dangerous if ingested in large quantities. It grows best in USDA zones 4 to 9.

Harvestbells 

Scientific name: Gentiana saponaria 

Harvestbells, also known as soapwort gentian, are perennial plants that produce bottle-shaped violet-blue flowers, which open only partially. The plant grows between 8 and 24 inches tall. Blooming occurs from August through October, though in warmer climates, flowers may last until November.

These flowers thrive in light shade but can tolerate full sun. They prefer moist, sandy soil but will adapt to other soil types as long as moisture levels are maintained. Acidic soil with a pH below 6.8 is ideal.

Bumblebees pollinate harvestbells, using their strength to push into the partially closed flowers for nectar. When planting, transplanting is often preferable to growing from seed, as seeds take an exceptionally long time to mature. Harvestbells grow best in USDA zones 5 to 9.

Himalayan Blue Poppy 

Scientific name: Meconopsis betonicifolia 

Himalayan blue poppies are stunning flowering plants that produce true blue blooms. They prefer partial shade and thrive in shade gardens. However, they can be challenging to grow, as they are particular about their environmental conditions.

The soil should be neutral to slightly acidic, moist but well-drained. Enriching it with humus can help promote healthy growth. These plants prefer cool summer conditions and do not tolerate excessive heat well.

Himalayan blue poppies grow between 3 and 4 feet tall, spreading 1 to 2 feet across. They bloom from early to mid-summer. As perennials, they should be cut back to the ground after fall. They are not resistant to pests like slugs and snails or diseases such as mildew. These plants grow best in USDA hardiness zones 7 to 8. 

Hyacinth 

Scientific name: Hyacinthus orientalis 

The hyacinth is a beloved plant that produces flowers in a variety of colors, including blue. It thrives in full sun and organically rich soil. An average pH level is ideal, as long as the soil remains moderately moist but well-drained. Keeping the soil moist after planting helps encourage strong root development. Hyacinths bloom for 2 to 3 weeks in mid-spring, so be sure to enjoy their beauty while they last!

These plants grow 6 to 10 inches tall and spread 4 to 6 inches. They are easy to grow with proper care and must be planted in autumn for early spring blooms. Hyacinths grow well in USDA zones 4 to 8 but require winter protection in zones below 5. Mulching their beds helps prevent frost damage. 

Hydrangea 

Scientific name: Hydrangea macrophylla 

Hydrangeas often have white flowers but are more well-known for varieties that have large clusters of pretty, blue flowers. They can grow quite tall, often reaching impressive heights of 6 to 10 feet, with a similar spread. Hydrangeas thrive in partial to full shade and will only tolerate full sun if their soil remains consistently moist.

To grow blue hydrangeas, you’ll need to monitor the soil’s pH. Highly acidic soil produces blue flowers, while more alkaline soil results in pink blooms.

These flowers bloom throughout summer, often for 3 to 6 months. Hydrangeas require little pruning, though you may choose to trim them after flowering. They are sensitive to cold and benefit from mulch as a root cover to help regulate temperature fluctuations.

Some years, they may not bloom as well due to factors beyond your control, but with continued care, they will eventually flourish. These plants thrive in USDA zones 6 to 11.

Impatiens

Scientific name: Impatiens namchabarwensis 

The impatiens flower has many varieties, but Impatiens namchabarwensis is the one that produces bright, sapphire-blue blooms. These flowers thrive in full sun but also do well in partial shade. Impatiens require rich, well-drained soil with consistent moisture.

Blooming from spring through summer, they offer a generous window of time to enjoy their rare and beautiful blossoms. These plants grow between 12 and 24 inches tall. Since impatiens are sensitive to frost, protect them in winter by mulching their roots.

In colder climates, impatiens grow as self-sowing annuals, while in milder regions, they behave as perennials. Given their rarity, they benefit from attentive care. They perform well in beds, containers, or almost any location where you’d like to enjoy their vivid flowers.

Iris 

Scientific name: Iris versicolor 

Irises are among the most well-known blue-blooming flowers. They grow about 2 to 2.5 feet tall and spread equally wide. They thrive in full sun but also tolerate partial shade. Iris virginica, commonly known as the Northern Blue Flag, is particularly popular in the southern United States.

Irises prefer medium-moist to wet soil, which can make maintaining the right moisture level a bit challenging. However, aside from keeping the soil consistently damp, these plants are relatively low-maintenance. They are, however, susceptible to rot and pests, so proper planning is essential.

These flowers bloom from May through June, with some varieties flowering into July and August. They are well-suited to wetter gardens and areas near water features, as they enjoy moisture. Irises prefer acidic soil with a pH below 6.8. They spread by self-seeding, so expect to see them return year after year. They thrive in USDA zones 3 to 9.

Larkspur 

Scientific name: Delphinium spp.

Larkspurs are a much-loved plant that produces flowers in a wide range of colors, including blue. They grow, reaching 1 to 3 feet in height and spreading 1 to 2 feet across. Thriving in full sun, they bloom beautifully from June through July. Larkspurs prefer alkaline, rich, and fertile soil with medium moisture and good drainage. While they love the sun, they perform best in cooler climates. In warmer regions, they benefit from partial shade.

Due to their height, staking may be necessary to keep them upright. Using bamboo stakes and string can help support taller varieties. Since they require consistent moisture, mulching their beds will help retain water, while adding compost can further enhance their growth.

Larkspurs grow best in USDA hardiness zones 3 to 9.

Lead Plant 

Scientific name: Amorpha canescens 

The lead plant is a deciduous shrub that produces tiny blue to purple flowers grouped in terminal spikes. It grows 2 to 3 feet tall and spreads about 2 to 2.5 feet across. Blooming from July to September, it thrives in full sun and tolerates drought well once established. It requires well-drained soil and can survive in poor, sandy conditions.

It’s worth noting that this plant takes time to flower—typically around four years after becoming established. Providing proper care early on will help ensure future blooms.

Lead plants have few issues with insects, pests, or diseases. They thrive in prairie-style gardens filled with wildflowers and make excellent ground cover. They grow best in USDA zones 2 to 9.

Lily of the Nile 

Scientific name: Agapanthus africanus 

The lily of the Nile is bright, showy, and alluring, with blooms in gorgeous shades of blue to blue-purple. These flowers thrive in full sun and require 6 to 8 hours of sunlight each day.

However, they do not perform well in extremely hot climates. If you live in a region with sweltering summers, providing partial shade can help them thrive. They prefer fertile, well-drained soil that remains slightly moist and tend to favor acidic conditions over alkaline ones.

This plant grows 1.5 to 3 feet tall and spreads about the same width. It blooms from June to July and requires regular watering during its growing period for proper establishment. Once the foliage turns yellow, watering should be stopped.

Lilies of the Nile grow best in USDA hardiness zones 8 to 11. As a final note, growing them in containers may be a better option than planting them in the ground, especially in areas with extreme temperatures.

Love-in-a-Mist 

Scientific name: Nigella damascena 

Love-in-a-mist is a beautiful annual plant that produces fluffy blue flowers surrounded by a tangle of foliage, resembling mist. It grows 8 to 20 inches tall and spreads 12 to 18 inches across.

These flowers thrive in full sun, though partial shade is beneficial in more arid climates. They prefer soil with a neutral pH of around 6.6 to 7.5, which should be kept fairly moist but well-drained for optimal growth.

Blooming from late spring to early fall, love-in-a-mist benefits from deadheading to encourage additional flowers. This short-lived plant is easy to care for, as it is virtually disease- and pest-free and requires minimal maintenance. It grows best in USDA hardiness zones 2 to 11.

Lungwort 

Scientific name: Pulmonaria officinalis 

If you’re looking for dainty blue blooms to brighten up early spring, lungwort may be a great option. This plant was once used to treat lung ailments, which is how it got its common name. It remains compact, reaching a height of 6 to 12 inches and spreading 12 to 18 inches wide.

Lungwort thrives in partial shade but does not compete well for nutrients when planted under trees. To keep it healthy, ensure it is watered consistently.

There are few concerns with this plant, as it is generally disease- and pest-free. While mildew and slugs can occasionally be an issue, they are easily managed. Soil should be kept moist and well-drained for optimal growth. Lungwort thrives in USDA zones 3 to 8.

Lupine 

Scientific name: Lupinus spp.

Beautiful spires of lupines are a stunning sight, especially when they bloom in shades of blue. These plants grow tall, reaching 3 to 4 feet in height and spreading 1 to 1.5 feet wide. They are often best grown in pots and can be annuals or perennials.

Lupines can be planted from seed in late spring or fall, while cuttings should be planted in early to mid-spring. They require full sun for the best results and thrive in rich, moderately moist, well-drained soil. Their long bloom period extends through spring and summer.

These plants prefer temperate climates and do not tolerate excessively hot or humid summers. Too much heat can prevent flowering, so if you live in an arid region, providing extra shade may help. While beautiful, lupines require extra care, as they are prone to pests and diseases. They grow best in USDA zones 4 to 8.

Monkshood 

Scientific name: Aconitum napellus 

Tall, elegant, and striking, monkshood is a wonderful perennial that produces beautiful blue flowers. It thrives in partial shade but also benefits from full sun in cooler climates. If the flowers begin to droop, providing more sunlight can help.

Monkshood grows slowly, but planting in early spring can result in blooms by mid-to-late summer. It prefers moist, well-drained soil with a neutral to acidic pH.

Regular watering is necessary, but be careful not to overwater. Once established, monkshood can tolerate short dry periods, but consistent watering encourages more reliable flowering.

Growing monkshood from seed can be challenging due to slow germination, so cuttings may be a more efficient option. This plant thrives best in USDA zones 3 to 8.

Morning Glory 

Scientific name: Ipomoea purpurea 

Morning glories are among the best-known blue flowers, growing on vines that are eye-catching and brilliant, with blooms lasting through summer and fall. They reach 6 to 10 feet or more in height and spread 3 to 6 feet wide.

As their name suggests, morning glories love the sun. Providing full sunlight will result in better flowering periods. They tolerate both cold and warm temperatures but will only open when in direct sunlight, so be sure to plant them in a bright spot.

Morning glories are generally resistant to pests and diseases, though they can be susceptible to fungal issues. Ensuring well-drained soil helps prevent rot caused by excess moisture. These hardy plants grow well in USDA zones 2 to 11.

Mountain Larkspur 

Scientific name: Delphinium glaucum 

Mountain larkspur is a perennial that produces showy blue-purple flowers. It grows 3 to 8 feet tall and may need staking for stability. Blooming from mid-summer to early autumn, it adds striking color to the garden.

This plant requires partial shade to grow properly and can be planted near taller plants to provide the necessary cover. It needs a lot of water to stay healthy, but well-drained soil is essential to prevent rot.

It’s important to note that mountain larkspur is highly poisonous to humans and should never be consumed. These plants grow relatively fast and begin blossoming in spring. They tolerate a variety of soil types, including sand, loam, and clay. Their nectar attracts bees and hummingbirds. A hardy plant often found blooming among wildflowers, mountain larkspur thrives in USDA hardiness zones 3 to 8.

Oxford Blue 

Scientific name: Eryngium bourgatii 

Oxford Blue is native to the Mediterranean and produces unique flowers that range from blue to blue-violet. These plants thrive in full sun and are an excellent choice for drier areas of the garden.

Oxford Blue grows well in normal soil of virtually any pH and tolerates sandy conditions. While they do require occasional watering, they benefit most from dry soils. With their minimal care needs, they are easy to maintain and highly rewarding when they bloom in mid to late summer.

This plant grows 18 to 24 inches tall and spreads 12 to 18 inches wide. With a medium growth rate, they require little maintenance—just patience. The flowers become a more intense blue with increased sun exposure, so be sure to plant them in a bright location. They grow best in USDA zones 5 to 9.

Passionflower 

Scientific name: Passiflora incarnata 

The passionflower, much like the bluecrown passionflower, is a vine that produces showy, attractive flowers, often in purple, though many varieties bloom in blue. It grows well in the southeastern United States.

These vigorous vines can reach heights of 12 to 36 feet, so be sure they have plenty of space to climb. They thrive in full sun but also perform well in partial shade. Once established, they tolerate drought, though moderate watering is still recommended. Adaptable to both heat and cold, they are a great choice for gardens across much of the U.S.

Passionflowers can be propagated by seeds or cuttings. They are excellent for trellises, arbors, and fences, clinging with tendrils rather than damaging structures. They grow best in USDA zones 5 to 9. 

Perennial Geranium 

Scientific name: Geranium bohemicum 

Perennial geraniums, especially Geranium bohemicum, are hardy plants that produce bright blue flowers. They thrive in full sun, so be sure to plant them in a spot where they can soak up plenty of sunlight. In very hot climates, they will also appreciate partial shade.

These plants grow 12 to 24 inches tall and spread 12 to 14 inches wide, making them an attractive choice for ground cover. They require little water, as they are drought-tolerant. Blooming from May through October, they provide a long season of vibrant color.

Perennial geraniums can be planted from seed or cuttings. This variety is self-seeding, so expect them to multiply over time. They do well in drier areas of the garden, adding much-needed life and color. These flowers grow best in USDA zones 3 to 9.

Periwinkle 

Scientific name: Vinca major

Periwinkle is a favorite garden plant, commonly used in beds, that produces blue flowers. This herbaceous perennial grows 6 to 18 inches tall and spreads about the same width, making it an excellent choice for ground cover. It thrives in sandy, loamy, well-drained soil.

A good soaking once a week is sufficient to keep periwinkle healthy. It loves full sun but also does well in partial shade, especially in hotter climates. Blooming from June until the first winter frost, it provides a long season of color.

Too much shade can lead to poor flowering, so plant periwinkle in a spot where it can soak up plenty of sun. It thrives in hot, humid weather. Propagation is easiest through cuttings, allowing new plants to establish quickly. Periwinkle grows best in USDA hardiness zones 7 to 9.

Pincushion Flowers 

Scientific name: Scabiosa ‘Butterfly Blue’ 

Pincushion flowers are compact perennials that form clumps of blue blossoms, blooming for an extended period—from late spring until the first frost. They grow 12 to 18 inches tall and spread about 15 inches wide.

These plants thrive in full sun, so ensure they receive plenty of sunlight for maximum flower production. In areas with very hot summers, providing some shade can help protect them.

Pincushion flowers prefer well-drained soil with medium moisture and an average pH. Once established, they are drought-tolerant.

These flowers attract butterflies, making them a great choice for a butterfly garden. Deadheading encourages continuous blooming, though they should be cut back in late fall. Hardy and easy to grow, pincushion flowers do well in USDA zones 3 to 9.

Poor Man’s Weather-Glass 

Scientific name: Anagalis arvensis ssp. arvensis f. azura

Poor man’s weather-glass is a low-growing annual with soft green leaves and delicate blue flowers. It grows 8 to 10 inches tall and spreads 1 to 2 feet wide, making it an excellent option for ground cover. Resilient and adaptable, it thrives in a variety of soil types as long as it receives full sun. It is also pest- and disease-free, making it very easy to care for.

This plant blooms in spring, and its flowering period can be extended by deadheading and ensuring adequate sunlight. With proper care, poor man’s weather-glass can bloom from March to July. It prefers moist soil but requires good drainage to prevent rot and fungal infections.

These plants grow best in USDA zones 3 to 12.

Poppy Anemone 

Scientific name: Anemone coronaria 

Poppy anemones are a fan-favorite flower that comes in many colors, including blue. They grow 10 to 16 inches tall and spread 6 to 9 inches wide. Anemones love full sun, so it’s best to plant them in a bright, sunny spot.

These flowers thrive in sandy, well-drained soil with medium moisture. They are sensitive to cold, so in colder climates, they should be planted in late spring once the risk of frost has passed. Poppy anemones have average water needs and tolerate a wide range of soil pH levels.

Bloom time depends on when they are planted—mid-spring planting results in beautiful blooms throughout summer. In very hot climates, providing some shade can help protect them. Poppy anemones grow best in USDA zones 7 to 10. 

Rose of Sharon 

Scientific name: Hibiscus syriacus 

Often mistaken for other flowers, the rose of Sharon is a stunning deciduous shrub that produces large, showy blooms in a range of colors, including blue. These shrubs grow 8 to 12 feet tall and spread 6 to 10 feet wide. They are highly invasive in some areas, so check with your local extension office before planting.

They also self-seed, so with the right conditions, you’ll see plenty of new plants emerging. Rose of Sharon thrives in full sun but also does well in partial shade. It prefers soil with a neutral pH, as long as it remains moderately moist and well-drained. This plant does best in rich, fertile soil, so adding fertilizer when possible is beneficial.

Rose of Sharon is generally resistant to pests and diseases. While it blooms best with ample sunlight, excessive heat can be damaging in very hot climates, so maintaining a balance is key. These shrubs grow best in USDA hardiness zones 5 to 8. 

Sage

Scientific name: Salvia officinalis 

Common sage is a well-loved herb used in many culinary applications, but it also produces beautiful lavender-blue flowers. It grows 2 to 2.5 feet tall and spreads about the same width. Blooming in June, it provides an early summer display to look forward to. Sage thrives in full sun, so be sure to plant it in a bright spot where it can soak up as much sunlight as possible.

Once established, sage requires little water. It tolerates drought and often prefers drier soil, though a deep weekly soak is beneficial—just be careful not to overwater, as wet soil can be fatal to the plant. Sage is highly resistant to pests and diseases, making it an easy-care addition to any garden.

This hardy herb grows best in USDA zones 4 to 8.

Sea Holly 

Scientific name: Eryngium planum 

Sea holly is similar to Oxford blue, producing striking, steel-blue flowers. This plant grows 2 to 3 feet tall and spreads 1 to 2 feet wide. It thrives in full sun with almost no reservations and is an excellent choice for gardens with drier conditions, as it prefers dry, sandy soil.

A very low-maintenance plant, sea holly is ideal for gardeners with limited time. Its blue coloration intensifies with increased sun exposure, so be sure to plant it in a sunny spot.

Avoid overwatering, as sea holly is susceptible to root rot. Otherwise, it is relatively free from pests and diseases. Deadheading can encourage additional blooms and create a neater appearance. This plant grows best in USDA zones 5 to 9.

Siberian Bugloss 

Scientific name: Brunnera macrophylla 

Siberian bugloss resembles forget-me-nots in appearance and is a great option if you’re looking for a blue-flowering plant with similar charm. What sets it apart is its beautiful foliage, which is prized just as much as its delicate blue flowers.

This plant grows low to the ground, reaching 1 to 1.5 feet in height and spreading 1.5 to 2.5 feet wide. It blooms from April to May, providing a good window of time to enjoy its flowers.

Siberian bugloss thrives in partial shade, so avoid giving it too much sun. In hotter climates, it may even prefer full shade, so consider this when choosing a planting location. Easy to care for, it has few issues with pests or diseases. This plant grows best in USDA zones 3 to 8.

Siberian Squill 

Scientific name: Scilla siberica 

Siberian squill is a low-growing plant that produces early-blooming flowers in a striking blue shade. Small in size, it grows 4 to 6 inches tall and spreads about the same width. It thrives in full sun to partial shade, so adjust accordingly based on your climate. Squills grow easily in soil with an average pH, medium moisture, and good drainage. These hardy plants tolerate cold very well.

For the best visual impact, consider mass planting them around shrubs or trees. They can be propagated by seed or division—the latter is best when the plants are dormant. Since they are relatively low maintenance, little effort is needed to keep them happy. Occasional watering and adequate sunlight will ensure they bloom well.

Siberian squill grows best in USDA zones 2 to 8.

Veronica

Scientific name: Veronica chamaedrys

Speedwell is a plant that produces beautiful spires of flowers in a range of colors, including blue. Its height varies by variety but typically ranges from 9 to 36 inches tall, with a similar spread. It’s best to plant speedwell in spring to allow for strong growth throughout the season.

As its name suggests, speedwell grows fairly quickly but is not invasive. It thrives in full sun for optimal blooming but will tolerate light shade. This plant prefers average, well-drained soil with a neutral pH.

Speedwell attracts butterflies and bees but is not favored by deer or rabbits, making it a great garden choice. It grows best in loamy soil and, while drought-resistant, still requires moderate weekly watering. Speedwell blooms best in USDA zones 4 to 8.

Stiff Blue-Eyed Grass 

Scientific name: Sisyrinchium demissum 

Stiff blue-eyed grass is an elegant perennial that produces delicate blue flowers. It grows up to 20 inches tall and spreads 6 to 10 inches wide, blooming steadily through spring and summer. Drought-tolerant and easy to grow, it thrives in full sun to partial shade and prefers moist, well-drained soil. Using compost can help enrich the soil and promote healthy growth.

This plant does well in containers and garden beds, adding beauty to various settings. Regular watering during the first growing period helps establish strong roots, while mulching helps retain moisture. After the blooming period, cutting the plant back can help prevent overgrowth.

Stiff blue-eyed grass grows best in USDA zones 4 to 9.

Swan River Daisies 

Scientific name: Brachyscome iberidifolia 

Swan River daisies are beautiful annual plants that produce showy blue flowers. They grow fairly low, reaching 1 to 1.5 feet in height and spreading about the same width. These plants thrive in cool summer climates and enjoy full sun, provided temperatures are not too hot. In warmer regions, partial shade is recommended. While they tolerate some drought, they prefer moist, organically rich, well-drained soil.

Although annuals, Swan River daisies have a long blooming period, flowering from May until the first frost. Deadheading and occasional pruning will extend their bloom time and help maintain their shape. While they can be susceptible to slugs and snails, they are generally free from disease and other pests. Swan River daisies bloom best in USDA zones 9 to 11.

Sweet Pea 

Scientific name: Lathyrus odoratus

Sweet peas are a favorite flower, loved for their wonderful fragrance and showy blooms. While they come in a variety of colors, they can also produce beautiful blue flowers. These plants grow tall, reaching 6 to 8 feet, and should be supported with stakes or bamboo tripods to keep them upright.

Sweet peas attract pollinators, making them a great choice for gardens that welcome bees and butterflies. They thrive in full sun but will tolerate partial shade in warmer climates. They prefer rich, well-drained soil and benefit from weekly watering.

Plant sweet peas after the last frost, as they grow best in warmer temperatures. Providing fertilizer during the growing season will help them bloom at their best. Hardy and adaptable, sweet peas thrive in USDA zones 2 to 11.

Triplet Lily 

Scientific name: Triteleia laxa 

The triplet lily blooms in late spring and early summer, producing funnel-shaped flowers in a lovely shade of purple-blue. It grows 15 to 18 inches tall and spreads about 4 inches wide. In favorable conditions, this plant will naturalize, providing repeat blooms each year.

Triplet lilies thrive in full sun and will soak up as much sunlight as possible. They prefer light, sandy, fertile soil with good drainage. In colder regions, mulching helps protect them from temperature fluctuations.

Easy to grow, triplet lilies are suitable for gardeners of all skill levels. They have little trouble with pests or disease and attract butterflies, making them a great addition to a butterfly garden. With average water needs, they require only minimal care to flourish.

Triplet lilies grow best in USDA zones 6 to 10.

Tweedia 

Scientific name: Oxypetalum coeruleum 

Tweedia is a broadleaf evergreen that produces delicate, sky-blue flowers. It grows 2 to 3 feet tall and spreads about the same width. While it thrives in full sun, it can also tolerate partial shade depending on the climate.

This plant has good soil tolerance and can grow in poor soils as long as they are well-drained. Drought-tolerant, Tweedia does well in dry to moderately moist conditions. It is best to protect it from strong wind and heavy rain whenever possible.

With few issues related to pests or disease, Tweedia is relatively easy to care for. Its showy flowers bloom seasonally, making it a lovely addition to beds or containers. If grown in containers, they should be brought indoors before the autumn frost. Tweedia grows best in USDA zones 8 to 11.

Veronica Georgia Blue 

Scientific name: Veronica umbrosa ‘Georgia Blue’ 

Related to speedwell, the final flower on our list is the stunning Veronica Georgia Blue. This perennial thrives in full sun and blooms throughout spring. It grows 4 to 6 inches tall and spreads 1 to 2 feet wide, making it an excellent choice for ground cover.

Low-maintenance and easy to grow, this plant requires little effort to flourish. It thrives in full sun to very light shade and does well in average, well-drained soil with medium moisture.

Veronica Georgia Blue is a great option for borders, garden edges, and containers. It looks especially striking when planted in groups. Relatively pest- and disease-free, it requires minimal care. As a bonus, it attracts butterflies and hummingbirds, bringing even more life to the garden. This plant grows best in USDA zones 4 to 9.