The Rusty Blackhaw Viburnum, also known as Viburnum rufidulum, is a deciduous shrub or small tree native to the southeastern United States. It is a member of the Adoxaceae family and is commonly found in woodland gardens, naturalized areas, and along streams. This shrub is valued for its attractive foliage, fragrant flowers, and vibrant fall color, making it a popular choice for landscaping and gardening.
Characteristics and Growth Habit
The Rusty Blackhaw Viburnum typically grows to be around 10-15 feet tall, with a spread of 8-10 feet. It has a dense, rounded crown and a straight, slender trunk. The leaves are simple, opposite, and 2-4 inches long, with a leathery texture and a rusty-red color when they emerge in the spring. As the leaves mature, they become dark green and develop a wrinkled appearance. In the fall, the leaves turn a vibrant red to purple color, adding to the shrub’s ornamental value.
Habitat and Soil Requirements
Rusty Blackhaw Viburnum prefers well-drained soil and full sun to partial shade. It can thrive in a variety of soil types, including clay, loam, and sand, but it does best in slightly acidic to neutral soils with a pH range of 6.0-7.0. This shrub is also relatively drought-tolerant, making it a good choice for areas with low rainfall or irrigation. However, it will perform best with regular watering and fertilization.
| Characteristic | Value |
|---|---|
| Growth Rate | Medium (1-2 feet per year) |
| Mature Height | 10-15 feet |
| Mature Width | 8-10 feet |
| Soil pH | 6.0-7.0 |
| Hardiness Zone | 5-9 |
Flowers and Fruits
The Rusty Blackhaw Viburnum produces small, white, fragrant flowers in the spring, which are arranged in flat-topped clusters at the ends of the branches. The flowers are hermaphroditic, meaning they have both male and female reproductive organs, and are self-fertile, meaning they can produce fruit without cross-pollination. The fruits are small, blue-black berries that are an important food source for birds and other wildlife. The berries are also edible for humans, but they are not as palatable as those of other Viburnum species.
Wildlife Value and Ecological Importance
The Rusty Blackhaw Viburnum provides important habitat and food for a variety of wildlife, including birds, small mammals, and insects. The shrub’s dense foliage and fruiting branches offer shelter and nesting sites for birds, while the berries and leaves are an important food source for many species. The shrub is also a larval host plant for the Spring Azure butterfly, making it a valuable component of pollinator gardens and wildlife habitats.
In addition to its ecological importance, the Rusty Blackhaw Viburnum has also been used in traditional medicine and as a food source by indigenous communities. The berries and leaves have been used to treat a variety of ailments, including fever, rheumatism, and digestive problems. The shrub's wood is also valued for its durability and resistance to rot, making it a popular choice for tool handles and other wood products.
How do I care for my Rusty Blackhaw Viburnum?
+To care for your Rusty Blackhaw Viburnum, make sure to provide it with well-drained soil and full sun to partial shade. Water it regularly, but avoid overwatering, which can lead to root rot. Fertilize the shrub annually with a balanced fertilizer, and prune it as needed to maintain its shape and promote healthy growth.
Can I grow Rusty Blackhaw Viburnum in a container?
+Yes, you can grow Rusty Blackhaw Viburnum in a container, but it will require more frequent watering and fertilization. Choose a large container with good drainage, and use a well-draining potting mix. Keep the soil consistently moist, but not waterlogged, and fertilize the shrub regularly to promote healthy growth.
Is Rusty Blackhaw Viburnum deer-resistant?
+Rusty Blackhaw Viburnum is considered to be deer-tolerant, but it is not completely deer-resistant. Deer may still eat the shrub's leaves and flowers, especially in areas with high deer populations. However, the shrub's dense foliage and prickly stems can help deter deer from feeding on it.
In conclusion, the Rusty Blackhaw Viburnum is a versatile and attractive shrub that offers a range of benefits for gardeners, wildlife, and the environment. Its low-maintenance requirements, tolerance of drought and poor soil, and ability to thrive in a variety of conditions make it an excellent choice for landscaping and gardening. With proper care and maintenance, the Rusty Blackhaw Viburnum can provide years of beauty and ecological value to any landscape.
