Amend soil with compost or aged manure before planting in full sun. Feed plants monthly. Remove faded flowers to prolong bloom. These dahlias will produce little underground tubers after their first season of bloom; select your favorite blossom colors when in bloom, then multiply those plants by digging up the tubers in late fall to replant the next spring.
TO GROW IN CONTAINERS: Space seedlings 4 to 6 inches apart in containers that are at least 16 inches across and 16 inches tall.