When should I sow carrot seeds?
Sow carrot seeds at a depth of 1/4 to ½ inch beginning in early April in central Iowa. For a continuous harvest, make additional plantings every 3 to 4 weeks. The last practical planting date for carrots is August 1.
Space rows 18 to 24 inches apart. If necessary, thin the seedlings within a few weeks of germination. After thinning, seedlings should be spaced 2 to 3 inches apart.