Ninebark 'Diabolo' is a deciduous shrub known for its striking dark purple to burgundy foliage, which provides a dramatic contrast in any landscape. The leaves are palmate, with 3 to 5 lobes, and emerge a rich purple-red in spring, deepening to a dark burgundy as they mature. In late spring to early summer, the shrub produces clusters of small, white to pinkish flowers, which are followed by red seed capsules that persist into the fall. The bark of older stems peels away in thin strips, revealing a reddish-brown inner bark, which adds winter interest and gives the plant its common name, "Ninebark."
- Size: Height: 6-10 feet. Spread: 6-8 feet.
- Light: Full sun to partial shade. Best color in full sun.
- Soil: Prefers well-drained soil but is adaptable to a range of soil types.
- Water: Regular watering during the first growing season to establish a deep, extensive root system. Once established, it is drought tolerant.
- Pruning: Prune after flowering to maintain shape and remove old, less vigorous stems to encourage new growth.
- Fertilization: Feed in early spring with a balanced fertilizer.
- Pests/Diseases: Generally pest-free, but may occasionally be affected by powdery mildew or aphids.