They are happy in cool (but not frosty) weather and they like plenty of water. They grow well in a temperate climate that is not too dry.
If you live in a warm climate, try them at the coolest time of your year, provided of course that the temperature does not dip below freezing, and water them well in dry weather.
Carrots are a root vegetable so you cannot see the actual carrot growing. They have fern-like leaves. They are related to dill and fennel plants, and you will see the similarity in the leaves.
If you have not had the satisfaction of growing carrots before, you will know them when they first come up by their feathery leaves that look a little like dill.
The leaves are edible and very nutritious but they contain a lot of potassium which makes them bitter, so they are best mixed with other vegetables in salads or soups. However, they can produce an allergic skin reaction in some people.
If you decide to grow wild carrots in your organic garden, you should know that the leaves of that plant are toxic. However, regular organic carrot leaves should be fine in small quantities as long as you are not allergic. Carrots were originally cultivated for their leaves, not their roots.
Provided you have the right conditions, growing carrots is pretty simple. You will find that you can buy many different varieties. They are not all long and thin, and they are not all orange.
Heirloom varieties may be purple, for example. Remember to look for organic seeds if you want organic carrots to grow from them.
Stubby or round carrots exist, and can be great for growing carrots in containers where you do not have the depth that long carrots would need. Carrots also do well in raised beds.
Carrots will mature in about 2 months from planting the seeds, but this varies according to the variety, so go by what you see on your seed packet. In temperate climates, plant in the spring. You can start before the last frosts provided that the ground is soft and loose enough to be worked.
If you are growing carrots for your own kitchen, you can plant them in succession, planting one short row per week throughout the spring. This way you will have fresh carrots every week instead of having them all ready at the same time.
You will need to thin your plants when they are a couple of inches tall. Thin them so that all of your growing carrots are at least a half inch apart. One inch is better.
Do not harvest them early, thinking that you will get sweet-tasting baby carrots that way. Baby carrots are a special variety. If you harvest regular carrots early, they will be bitter.
Be sure to rotate your carrots around the garden, as you do with other plants. This will prevent pests such as carrot rust from becoming established.
If you follow all of these tips, you should have no trouble growing carrots in your organic garden.