Cosmos bipinnatus, commonly called the garden cosmos is a medium-sized flowering herbaceous plant in the daisy family Asteraceae, native to the Americas. The species and its varieties and cultivars are popular as ornamental plants in temperate climate gardens. Garden Cosmos Flower Seeds red Color Cosmos Bipinnatus aster Asteraceae seeds (Red Color) for Planting. Cosmos bipinnatus, is considered a half-hardy annual, although plants may reappear via self-sowing for several years. Let the sunny disposition of cosmos, waving to and fro in the wind, brighten your day. Cosmos flowers will present themselves just 50 to 60 days after being sown.