Company: Siskiyou. Tall plants grow to nearly 4 festooned with large, fully-double and semi-double blooms in shades of fuchsia, pink, and white. Double Click is a must-have for the cut flower grower–less likely to drop petals than other cosmos and longer lasting in the vase. Its also an excellent choice for the garden border. Its long bloom season makes for up to 8 weeks of flowers. Succession plant to extend the number of weeks you have Double Click in its full glory. Cosmos can tolerate light frosts and may be sown in a wide range of temperatures for early and late season blooms.