Cosmos Flower Growing. Water and wait for a new crop. Species plants can grow as much as 6 feet 2 m tall so look for dwarf or compact cultivars for containers.
Deadhead to prolong flowering and lift in autumn after the first frosts. By midsummer they were harvesting the growing numbers of cut flowers for delivery to local markets florists and events creating a beneficial loop linking businesses with an extremely local source of cut flower material produced by local youth. The farm is thriving.
After that though your flowers should continue to bloom until the next frost.
While compact Cosmos sulphureus are great for container gardening Cosmos bipinnatus reaches six feet or higher with a tendency to topple over. Mar 22 2000 Cosmos Cosmos bipinnatus was popular 30 years ago when people grew flowers from seed rather than buying transplants for flower beds. Sunflowers marigolds yarrow daisies zinnias lettuce and dandelions. It produces daisy-like flowers to 25 diameter with yellow discs and yellow rays.