An exceptional, free-flowering clematis with 4-6″ pom-pom like blue/purple double flowers. Diamantina has many flowers on each stem and each flower last up to 4 weeks. Care Clematis grow best in locations that receive plenty of sunlight, at minimum they should receive at least 5 to 6 hours of direct sunlight each day. The roots should be kept shaded to keep the roots system cool and moist. They are moderate feeders. Adding aged cow manure or compost to the soil every spring will provide clematis with the nutrients they need to grow healthy and strong. Prune in late winter or early spring before new growth emerges. Pruning Type 2. Fertilize between April and July, making the applications when the soil is moist. Best grown as a perennial in zones 4-9. Growth Habit Repeat flowering throughout the summer. This double clematis far outperforms any other double clematis currently available! It grows to a height of 7 feet. Toxicity All parts of the plant, including leaves, stems, and flowers, are potentially harmful if ingested by dogs and cats. Deer & rabbit resistant.