Cleome's common name is Spider Flower, for the long "legs" that jut out from the blooms. As the flowers fade, long, slender seed pods form. Cleome are prodigious self-seeders, but because most are hybrids, you never know what colors you will get next year. Seed can be direct down, anytime after your last frost date. These are tall flowers that branch out and generally can support themselves without staking.