Beginner-friendly guide to growing cosmos—learn simple planting and care tips for nonstop blooms and vibrant summer color.. Learn how to plant and care for the cosmos flower so they thrive in the right combination of sun, soil, temperature, and water. Our gardening experts explain how.
Learn how to grow cosmos flowers (Cosmos sulphureus, C. bipinnatus), drought-tolerant annuals that mature quickly and offer bright, abundant blooms.. Not only are all types of cosmos easy and inexpensive to grow, they produce an abundance of pretty, daisy-like flowers that can be cut for the vase during summer and early fall. They are native to Mexico, where they bloom in swathes of pink, white, and orange in sun-baked meadows and scrub. The name derives from the Greek kosmos, meaning 'beauty and harmony of the universe', and was.