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When to Sow Carrot Seeds Outside
Growing Zone
Spring Planting
Fall Planting
2a
Late April - July
2b
Late April - July
3a
Late April - July
3b
Late April - July
4a
April - June
4b
April - June
5a
Late March - July
5b
Late March - July
6a
March - July
6b
March - July
7a
Late January - March
Early August - September
7b
Late January - March
Early August - September
8a
February - March
August - September
8b
February - March
August - September
9a
January - February
October - December
9b
January - March
September - December
10a
January - February
October - December
10b
January - February
October - December
How to Plant Carrots
Once you have determined your growing zone, carrot seeds can be sown directly into the garden soil or container. Stagger your planting times so you will have fresh carrots ready to harvest all during the growing season. Planting SiteThe garden soil should be loose and free of stones and debris. Sow the seeds no more than 1/4-inch deep and lightly cover with soil. Water the area with the gentlest stream possible, and keep it constantly moist until the seeds sprout. Germination can take 14-21 days. SpacingBecause the seeds are tiny, it is almost impossible to space them well. Allow the plants to grow until they are one inch tall. Then, thin them out so they are 2 to 4 inches apart and don't compete for nutrients, moisture, and light. This will give you better, stronger carrots to harvest. As they mature, the carrots may push up out of the soil. Hill some soil around the top to prevent sunburn that causes green shoulders. ![]() PhotoAlto/ Laurence Mouton / Getty Images Growing Carrots in ContainersCarrot seeds can be directly sown into containers by using potting soil for potted vegetables. The container should be at least 12 to 24 inches in diameter, and at least 12 inches deep. Be sure that it has multiple drainage holes because container-grown carrots require more water than garden-grown but won't thrive in mushy soil. Carefully sow a few seeds on top of the soil and cover lightly. Be sure to thin out the excess plants if they are crowded. Select shorter finger-sized (two to three inches) or small round carrots, like 'Paris Market'. These will mature more quickly and grow straight and true in a container. Ideal cultivars include: 'Atlas': Small spherical roots 1-2 in long; good for containers'Little Finger': Nantes type with 4 in long roots; small and sweet![]() Dorling Kindersley/ Gary Ombler /Getty Images When to Harvest CarrotsThe variety of carrots you plant will determine when it is the best time to harvest your crop. Most carrots are mature in about 50 to 75 days from seed. Follow the guidelines on your seed packet. Carrots can withstand the first light frost—and it may even help them taste sweeter—however, the carrots should be harvested before a hard frost. Carrots should be allowed to mature fully to achieve their full flavor and sweetness. If your soil is loose, you can use your fingers to test the size of the root to see if it is the diameter expected at maturity. When ready to harvest, give the top of the root a slight twist and pull it from the soil. Remove the carrot tops immediately for the best-tasting carrot roots. ![]() Lonely Planet Images / Getty Images |
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