36-40" tall. Dahlia Semi Cactus Karma Corona will give you gorgeous salmon-orange blooms with soft yellow centers throughout the summer months. Strong upright stems with deep, dark-green foliage support this fantastically colored flower that blooms all summer long, making Karma Corona Dahlia a wonderful choice for a cutting flower. Flowers can be cut at a fairly immature stage to ensure a long vase life. Because of their strong stems, they usually need no staking. Dahlias are pest resistant and will continue to bloom throughout the season, until frost. Native to Mexico and Central America, Dahlias are easy to grow and a good choice for gardeners in hot, sunny areas but they can be grown almost anywhere in the United States. Plant in full sun, in compost enriched garden loam. Pinch excess buds and deadhead for more and larger blooms, water well during growing season, especially when grown in containers. Cold hardy in zones 8-10. In colder zones lift the bulbs in fall and store in a cool place over the winter.