Dill is an annual that is best grown in rich, light, well-drained soils in full sun. Plants are more apt to fall over in part shade. Shelter plants from strong winds. Close-planting, stakes or cages may be used to provide support. Best growth occurs in cool summer climates. Plants appreciate consistent soil moisture. Soils should not be allowed to dry out. Plants tend to bolt when conditions remain dry. Sow seed directly in the ground just before the last spring frost date. Seedlings can be difficult to transplant, so seeds are usually not started indoors. Additional seeds may be planted every two weeks until early summer for purposes of extending the time when fresh leaves may be harvested. Dill seed may be harvested by placing the seed heads in paper bags to dry about 2-3 weeks after flowering (this method will also help prevent self-seeding in the garden). In zones 5 and lower , a patch of dill will usually self-seed and produce new plants each spring. Dill may also be grown in large containers (deep roots of dill need deep containers).
