|'Merida' is generally ready for harvest after 240 days, and is an interesting overwintering type. When planted in late September or early October, this variety can be harvested in May and June for an extremely sweet 7-8 inch root with foliage that is very resistant to bolting. Loose, well-drained soil, free from clods and stones are a must for carrots. If your soil is less than ideal, plant only short rooted varieties. A hardy biennial grown as an annual, carrot tops are a rosette of fern-like foliage growing from a swollen tap root. A cool weather crop that is easily grown with few disease or pest problem, they should be planted in early spring with successive crops being planted every 2 to 3 weeks until early summer for a continuous crop. Start 2 to 3 week after the last average frost date. They may be cold tolerant, but seeds take forever to germinate in raw weather. Carrots should be planted in full sun, but will tolerate partial shade. Prior to planting, work a low nitrogen fertilizer such as 5-10-10 into the soil.