Carrots is one of those vegetables that is most consumed and always the pricey one in the market. That makes it a very good candidate for a kitchen garden
How to Grow in Pots
Carrot is a root vegetable with roots growing up to a feet. Selecting a proper container is essential for a good yield. Most containers are too shallow to grow tap-rooted vegetables like carrots, and containers dry out too quickly. Carrot can grow in a 12" -18” (30-45 cm) deep planter box or pot. Deeper pots or planters work even better.
Carrot needs light or sandy loam soil . For container carrots, make your own potting soil by mixing perlite or vermiculite in soil for good aeration & root growth. If your soil contains too much clay, your carrots will be short and deformed, and difficult to pull from the ground at harvest time!. Make sure the water drains properly . You may use Clay Aggregates for such purpose..
Add a small amount of organic fertilizer every 2 weeks to supply nitrogen for top growth. Using Vermicompost is an excellent addition to potting soils for carrots in containers.
2-'3" apart in all direction
While sowing seeds make sure the soil is damp and not wet. Water the seeds as the soil starts to dry. It should always be moist, but never wet or muddy. Do not water the seeds if the soil is already moist to the touch, as overwatering your plant can be just as harmful as underwatering.
Keep the seedling tray in bright filtered light to begin with. Slowly introduce the plant to morning sun and bring it back in before the afternoon sun sets in. In a weeks time you can put it in direct sunlight.