Cosmos are easy-to-grow, versatile warm-season annuals featuring daisy-like flowers on long, slender stems with lacy, fern-like foliage. Reaching 3 to 5 feet tall, they thrive in full sun and poor-to-average soil, blooming in shades of pink, white, red, and orange from summer to frost. They are ideal for borders, cut flower gardens, and attracting pollinators.