Easy to grow and thriving almost anywhere, cosmos are annuals attracting hummingbirds, butterflies and countless beneficial pollinators to their profuse blooms. Swaying in the slightest breeze, cosmos are such a joy to grow! Fruition shares two species of cosmos, sharing the same genus: Cosmos bipinnatus which are not edible as well as C. sulphureus which are edible. Both are fabulous dye plants! At Fruition, we sow cosmos indoors in soil blocks 4 weeks before final frost to transplant after final frost, though you can easily direct sow cosmos after final frost, as well.