Seashells Cosmos add colorful texture to any bouquet. The petals are tubular or cone-shaped rather than flat, giving the flowers an intricate look. Seashells Cosmos produce 2-3 inch flowers in shades of rose, pink, white, and carmine all summer until frost. Seashells Cosmos tolerate poor soil, heat, and drought and is attractive to bees, butterflies, and hummingbirds. Seashells Cosmos have tubular petals with fluted edges, which gives them the impression of seashells. The pastel flowers are produced on tall stems with ferny leaves. Seashells Cosmos make interesting cut flowers. Botanical Name: Cosmos bipinnatus Life Cycle: Annual Light Requirement: Full Sun, Partial Shade Planting Season: Spring Plant Type: Tubular Petals Surrounding a Yellow Center, Pinnatisect Leaf Shape Features: Open Pollinated, Attracts Pollinators, Easy to Grow Maintain, Fast Growing Color: Pink, White, Red Blooms: Summer, Late Summer, Early Fall, Fall Days to Maturity: 77 Days Plant Height: 3-5 feet Plant Spacing: 9-12 inches Planting Depth: 1/4 inch Sowing Method: Direct Sow Cold Stratification: No Hardiness Zones: 2, 3, 4, 5, 6, 7, 8, 9, 10