13 Tricks for Amazing Carrots this Season
Carrots are a finicky crop, especially during germination. If you’re tired of pathetic root harvests, former organic farmer Logan Hailey unveils the best tricks for growing sweet, crunchy, market-worthy carrots.
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Have you struggled with patchy germination, skinny roots, overwhelming weeds, or disappointing carrot yields? This crop is one of the most finicky of all the garden vegetables, but you don’t have to be a professional to grow amazing carrots. These simple tips and tricks will ensure successful and sweet carrot harvests every time.
About Carrots
Carrots are a finicky crop that requires extra loose soil with consistent moisture. Use a broad fork or digging fork to thoroughly loosen the upper 10” of soil before planting. Sow the seeds in the spring or fall when the weather is cool and soils are between 45-80°F (7-27°C). Maintain consistent moisture and never let the seedlings dry out.
Be patient with germination, and thin to one to two inches between plants shortly after emergence. The sweetest carrots come from mild days and chilly nights. Full sun orientation is ideal for the most vigorous growth.
13 Tips for the Best Garden Carrots
Don’t give up on carrot-growing yet! Many gardeners struggle with this iconic, tasty root, but the solutions may be easier than you think.
Choose the Right Variety
Not all carrots are created equal! Growing an abundant root harvest starts with proper varietal selection. Have you noticed the difference between super sweet baby carrots and chunky, dense stew carrots? If you shop at farmer’s markets, you may also find that grocery store carrots often lack flavor compared to farm-fresh ones. This all has to do with variety.
Many industrially-produced carrots are selected for the highest possible yields rather than the best flavors. Heirloom carrots may have extraordinary flavor but less productivity. Garden hybrids offer a balance between the two. All carrots are cool-season crops that perform best in the chillier buffer seasons of spring and fall, so testing out a few successions of different varieties will help you find which type best fits your climate and taste buds.
Spring versus Fall Carrots
Timing your carrot planting with your variety is the first step to success. Some carrot varieties are bred for spring, while others are developed for fall harvests and prolonged storage. Spring carrots tend to mature more quickly and have a sweeter flavor with a tender texture for fresh eating. Fall carrots take longer to mature and have thicker skins to help them last in storage. They are better for stews, roasts, pickling, and canning.
It’s also helpful to consider how you want to use your carrots. Plant breeders have worked hard to develop cultivars specifically for certain farm and garden uses. If you want ultra-sweet, crunchy carrots to snack on straight out of the garden, you must choose a variety that has been bred for flavorful fresh eating. But if you prefer a carrot that will last in your refrigerator all winter long, those fall storage carrots are ideal.
Best Spring Carrots
- ‘Scarlet Nantes’: Sweet, crisp, deep orange, and uniformly cylindrical
- ‘Yaya’: Highly coveted early Nantes type popular amongst organic farmers
- ‘Tendersweet’: Uniform, frost-tolerant, and perfect for early spring
- ‘Little Finger’: Versatile baby carrots about 3” long and are great for fresh eating
- ‘Carnival Blend’: Festive thin roots with oranges, purples, reds, and yellows
Best Fall (Storage) Carrots
- ‘Rainbow’: Large roots great for pickling
- ‘Shin Kuroda’: Ideal for late planting, heat-resistant, and thick tapered roots for storage
- ‘Danvers 126’: Fiber-rich roots are heat-tolerant for late spring, summer, and fall plantings
Thoroughly Loosen the Soil
Although carrot greens are edible, the most coveted part of the plant is clearly the bright orange (or purple or yellow) roots. These roots cannot grow into elegant, elongated cylindrical or cone-shapes in compacted soil. If you’ve often pulled up stubby or malformed carrots, hardpan soil is probably to blame. Roots are strong, but not that strong. They can only push through so much resistance before they decide to just grow outward.
Before sowing carrot seeds, amend the soil with compost and take the time to loosen the bed. A broad fork is the best tool for the job, but you can also use a digging fork. You want to loosen the soil at least six inches deep to ensure the roots can easily dig straight down. This improves the aeration of the soil, allowing more rapid establishment, even moisture, and vigorous growth. As a bonus, looser soil promotes more diverse populations of beneficial soil microorganisms.
If your garden beds are shallow or you have heavy clay soil, try out a rounded carrot cultivar like ‘Tonda di Parigi.’ These unique little carrots grow more like radishes yet have the same tasty flavor as the classics.
Sow Seeds at the Right Time
The best time to plant carrots is two to four weeks before your average last spring frost date. While these plants are frost-tolerant at maturity, they still need moderate warmth to germinate properly. Use a soil thermometer to check that the soil temperature is at least 45°F (7°C). Ideally, it is closer to 60-85°F (6-29°C). You can use a clear or black tarp laid over the soil surface to help attract sun rays and heat beds up more rapidly in the spring.
Direct seeding is the main option because the taproots are highly sensitive to disturbance from transplanting. Occasionally, you can get away with biodegradable pots, but I find it is not worthwhile to transplant these roots.
Fall carrots should be planted at least ten weeks before the first fall frost so they have plenty of time to mature. When the first frosts set in, the roots will sweeten through cold nights. They can hold in the ground until temperatures dip below 20°F (-7°C). It’s best to pull them before hard frosts to avoid frost damage. Roots with frost damage (soft spots with burst cells) will not last long in storage. They are more prone to rotting and don’t have the signature carrot crunch.
Remember, you can always grow multiple successions of carrots throughout the season. This is not a one-and-done crop. If you start seeding one to two weeks before your last spring frost, you can sow a new bed of carrots every two weeks until late spring for a continuous supply. Take a break from carrot growing in midsummer and return to succession planting every three weeks until 10-12 weeks before your average first fall frost.
Sow at the Right Depth
Tiny carrot seeds cannot tolerate being planted super deep in the soil. If they are covered with too much dirt, they won’t have enough energy to sprout up above the surface. The seeds should be sown no more than ¼” deep. Lightly press them into the soil and sprinkle them with sieved compost or fine vermiculite to keep the seeds in place.
Can you tell that carrots are finicky yet? These vibrant roots are surely the divas of the vegetable world. But you will quickly become a master at carrot growing once you get the first few crops dialed in.
Use Proper Spacing
Most varieties should be spaced with about one inch between plants and six inches between rows. Larger roots enjoy two to three inches of space between them, but I wouldn’t recommend planting seeds any closer than ¾” apart unless you want super skinny carrots.
Don’t worry if you accidentally scatter too many seeds in one area. We’ll cover the best methods for thinning them out below. It’s always better to over-seed and thin rather than under-seed and waste a bunch of space with bare soil.
Use Overhead Irrigation to Germinate
Drip irrigation is ideal for most crops in your garden, and it works great for carrots, too, as long as it is used after germination. If you try to water newly sown seeds with drip lines, you may be sorely disappointed in your germination rate. Instead, use overhead irrigation like a sprinkler or a fan-nozzle watering hose to properly water freshly sown carrot beds.
These tiny seeds are highly demanding when it comes to water. As you irrigate, you should generously cover the bed with moisture from the top. You want to be sure the water penetrates the soil without displacing the seeds. To do this, slowly move the hose back and forth several times over the bed.
If it regularly rains, you’re in luck! Carrots are amazing for areas with rainy spring weather because you won’t have to work as hard to irrigate them.
Deep watering is important to ensure the soil doesn’t dry out. The harsh rays of spring sunlight can easily dehydrate the upper inches of soil, which is exactly where the picky seeds are hanging out, soaking up as much moisture as they can. If you thoroughly water your carrot beds every day using overhead irrigation, you will secure your fate as a master carrot harvester later in the season.
Use Row Cover
Row cover is a carrot grower’s best friend because it creates a warm microclimate right at the soil surface. You can “float” this lightly woven fabric over the top of newly seeded beds and secure it in place with smooth stones or sandbags. It will increase the soil temperature and help retain moisture to promote faster, more even germination.
Although row cover is permeable to both light and moisture, I recommend lifting up the row fabric before irrigating. It is a common mistake to water seeds from above the row cover. While this can work to saturate the bed, it often leads to shallow watering. The moisture can soak the fabric, yet have a hard time evenly wetting the soil below. It’s best to lift one edge of the row cover, water the seedbed, and then replace the fabric to hold in the moisture and warmth.
Once those stubborn seeds sprout, you won’t have to worry about these issues any longer because the roots will dig deeper into the soil. You’ll be able to run drip lines under the floating row cover or take the cover off altogether. This method is most important during the germination phase.
Do NOT Let Carrot Seeds Dry Out
Carrots take longer to germinate than most other vegetable crops. The finicky seeds require at least 14 days to sprout or sometimes up to 25 days. The biggest mistake you can make with carrots is letting the seeds dry out during the germination period. If the soil goes dry even just for a day, the seedlings will likely die before they can reach the surface and grow to their fullest potential.
Check your carrot seeds at least once per day to ensure they are moist. Stick your finger in the soil at least three inches deep and see if it feels like a wrung-out sponge. If your skin comes out completely clean, the soil is probably too dry for the seeds.
While overwatering is an issue for many gardeners, you don’t have to worry about it as much during the germination phase of carrots. Of course, the soil should not be soggy and puddled up like a lake, but it needs a good amount of moisture to support early plant establishment.
Try a Stale Seedbed
In addition to carrots’ high water demands, this dramatic crop is highly sensitive to competition from weeds. A weedy carrot bed often yields spindly lame roots that fail to grow to their full size. Moreover, it’s quite tedious to pull weeds from between tiny carrot seedlings.
The stale seedbed technique is used by many farmers and market gardeners to ensure carrots germinate in a relatively weed-free environment. Stale seedbed means any existing weed seeds can germinate before the crop does. The weeds are removed just before the carrot seedlings emerge from the soil so the crop can get established without competition. The trick is all about timing.
All you need is a piece of cardboard or a flame weeder. The former is easiest for a home-scale garden, and the latter is preferred for larger bed production. Here’s how to create a stale seedbed:
- Prepare a clean garden bed with a nice layer of compost on top.
- Seed your carrots with the instructions above.
- Plant a couple radish seeds at the end of the bed where they will be visible.
- Water the seeds thoroughly and maintain moisture.
- Optionally, lay a piece of cardboard over the carrot section.
- When the radish seeds germinate, it’s time to kill any weeds that sprouted in the vicinity.
- The radish germinates faster than the carrots, so it acts like your timed reminder.
- Use a flame torch over the entire bed to kill off any bean thread-stage weeds.
- If you used cardboard, lift it up so the carrots can reach light to germinate.
If this seems too complicated, skip it! Just be sure you properly remove any weeds as they arise. If weeds are growing very close to your carrot seedlings, use the fingers of one hand to hold the base of the carrot in place while you tenderly lift the nearby weed out of the ground. This will prevent your crop from getting uprooted or disturbed by weed removal.
Thin Seedlings
Once carrots germinate, you’ve overcome 75% of the struggle! Now you just need to thin the seedlings and tend them until harvest. Carrots become delightfully worry-free once they sprout. Thinning ensures that each root can grow to a mature size without getting overcrowded by its neighbors. A bunch of carrots grown too close together will end up like measly toothpick roots.
Use needle-nose pruners or the tip of sharp shears to cut out any seedlings that are too close together. Aim for a one-inch spacing between each plant. Alternatively, you can very carefully pull out every other plant, skipping over any areas with lower germination. Remember, the taproots really hate to be disturbed. Thin the seedlings as early as possible so they have room to breathe as they grow.
Maintain Consistent Moisture
Once carrots sprout, you don’t have to be as obsessive about watering, but the bed should still stay consistently moist. Huge fluctuations from dry to wet can harm the flavor and texture of the roots.
After germination, you can lay down drip lines and irrigate just like your other veggie beds. Once the plants are a few inches tall, you can also use shredded leaf mulch or fine straw to mulch over the soil surface to retain more moisture.
Harvest Correctly
When the greens are about 12” tall, and you begin to see carrot shoulders peeking up above the soil surface, it’s time to pull a few roots to see if they’re ready. Carrots can technically be eaten at any time during their growth, but you get the most bang for your buck if you harvest them once they are fairly large. After all, you put in a lot of work to germinate them.
First, use a broad fork or digging fork to pry the roots upward. This ensures you don’t accidentally snap the top off of the root. Grab the base of the carrot and gently shimmy it around until you can easily pull it up.
Remove the Tops for Storage
If you want to store carrots in your refrigerator for any amount of time, always remove the greens! Carrot tops make lovely compost inputs or chicken snacks, but they are not good for storing the roots.
The tops suck moisture out of the roots, causing them to dehydrate and become floppy in the refrigerator. Chop off the greens quickly after harvest and wash the roots with a hose before taking them to your kitchen.
Final Thoughts
The secret to carrots is front-loading your efforts. If you take the time to loosen the soil, properly sow the seeds (not too deep!), and keep them consistently moist, you can enjoy excellent germination and a relatively worry-free root-growing season.
Don’t forget to thin the plants to at least one inch apart to prevent overcrowding. Nobody wants skinny, spindly carrots! Lastly, use a broad fork or digging fork to harvest so you don’t accidentally snap the roots at the base.