Pot marigolds can be sown directly in the spring, or even summer, or they can be started indoors as transplants. They’re very easy to maintain and once established in your garden, they will self-seed, but they don’t generally become a nuisance.
Rich soil and a full sun location will keep your calendula blooming, although they will adapt to most any soil conditions. Don’t be afraid to cut blooms from your pot marigold. It will only encourage more budding, which is a good thing. In addition to their culinary uses, pot marigolds are used in herbal medicine, as a dye plant and even as a cut flower.
Problems: Virtually problem free.
Harvesting: Collect flowers in late morning, after the dew has dried. Pick flowers when they are fully open and check often, because they come and go quickly.
You can use the flowers fresh or you can dry and store the blossoms for later use. Cut the flower heads off and spread them out on a screen, in a shady, dry spot. Turn them occasionally until they are papery dry and store until ready to use.