Carrots need cool weather to properly mature and develop their sweet flavor. Sow these edible roots about two weeks before the last frost and every three weeks thereafter, except during the summer heat, to create staggered harvest times. Mix with radish seeds to mark the row with fast breaking radish plants before the carrots emerge.
Since the taproot is harvested, soil needs to be deeply worked and raised beds are recommended. Soil should be well drained and stone free, as any obstacles may stop growth or cause divisions. Too much nitrogen content contributes to fibrous roots and divisions. Potassium promotes sturdy, flavorful root development. Work wood ash into the soil for easily utilized potassium. Mulch to retain moisture and to protect the carrot shoulders from sun exposure (which could result in bitter taste). If temperatures seldom drop below 20 degrees F, just leave in the ground through the winter.
Green foliage above the ground is also edible and can make an attractive garnish. Baby carrots are standard size carrots that are harvested early. Miniature carrots are developed to remain small even when fully mature. Other members of its family include dill, parsley, caraway, fennel, coriander, chervil and parsnips. As a biennial plant, it has white blooms when allowed to flower. In the wild it is called Queen Anne's lace.