Calendulas grow one to two feet tall and produce flowers of yellow and orange. They do best in full sunshine and a rather dry soil. The plants bloom most of the summer, but are intolerant of intense heat and may die out during periods of hot humid weather. The flowering season is prolonged when old flower heads are removed. Pot marigold can be used as a bedding plant or as a source of cut flowers.
Space plants eight to ten inches apart.
The seed may be started indoors or be planted directly into the garden. Germination takes 10 to 14 days at 70 degrees. Cover the seed with soil to exclude light. Seeds sown in July bloom in late summer. When transplanting Calendula try not to damage the taproot.