Because carrot seeds are very small plant them very shallow allowing only enough soil to prevent them from being blown away by wind. The seeds will take from 7 to 15 days to germinate.
Try to aim for a seed spacing of at least 0.98 inches (2.5 cm) and sow at a depth of around 0.23 inches (0.6 cm). Soil temperature should be kept higher than 16°C / 61°F to ensure good germination.By our calculations, you should look at sowing Cosmic Purple about 14 days after your last frost date.
Sow in deep, well-worked, stone-free soil after danger of heavy frost from spring to midsummer. Do not transplant, as crooked roots may result. Cultivate periodically or mulch to control weeds. Keep soil evenly moist.
As Cosmic Purple is very hardy, ensure temperatures are mild enough to plant out - wait until after your last frost date to be on the safe side.By our calculations, you should look at planting out Cosmic Purple about 14 days after your last frost date.
Cosmic purple carrots get about 7-inches long. The purple color is actually only skin deep, the inside is a lovely orange color.
This variety tends to be ready for harvesting by late spring.