Tree Wisteria
(Bolusanthus speciosus)
Tree Wisteria (Bolusanthus speciosus)
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Forest and Kim Starr
CC BY 2.0
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Forest and Kim Starr
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Copyright:
CC BY 2.0
Copyright Notice:
Photo by: Forest and Kim Starr | License Type: CC BY 2.0 | License URL: https://creativecommons.org/licenses/by-sa/2.0/ | Uploader: Starr Environmental | Publisher: Flickr |
Estimated Native Range
Summary
Bolusanthus speciosus, commonly known as Tree Wisteria, is a deciduous tree native to the woodland and savanna regions of Southern Africa, particularly on well-drained basalt soils. It typically grows to a height of 20-25 feet (6-7.5 meters) and a width of 15-20 feet (4.5-6 meters). The tree is known for its striking appearance, with a slender form and smooth, gray bark. During the summer months, it produces pendulous clusters of vibrant violet-blue, pea-like flowers that are highly ornamental and fragrant, attracting pollinators such as bees and butterflies.
Tree Wisteria is valued for its showy flowers and is often used in gardens and landscapes as a focal point or for shade. It is suitable for urban environments due to its moderate size and non-aggressive root system. This species prefers full sun but can tolerate light shade and requires moderate watering, thriving in well-drained soils. While it is generally easy to maintain, it can be susceptible to frost damage in colder climates and may require protection. It is not known to be invasive when grown outside its native range, but gardeners should always monitor and manage their plants responsibly.CC BY-SA 4.0
Tree Wisteria is valued for its showy flowers and is often used in gardens and landscapes as a focal point or for shade. It is suitable for urban environments due to its moderate size and non-aggressive root system. This species prefers full sun but can tolerate light shade and requires moderate watering, thriving in well-drained soils. While it is generally easy to maintain, it can be susceptible to frost damage in colder climates and may require protection. It is not known to be invasive when grown outside its native range, but gardeners should always monitor and manage their plants responsibly.CC BY-SA 4.0
Plant Description
- Plant Type: Tree
- Height: 20-25 feet
- Width: 15-20 feet
- Growth Rate: Moderate
- Flower Color: Purple
- Flowering Season: Summer
- Leaf Retention: Deciduous
Growth Requirements
- Sun: Full Sun
- Water: Medium
- Drainage: Medium, Fast
Common Uses
Bee Garden, Bird Garden, Butterfly Garden, Low Maintenance, Potted Plant, Showy Flowers
Natural Habitat
Woodland and savanna regions of Southern Africa
Other Names
Common Names: Rhodesian Wisteria Tree, Wild Wisteria, African Wisteria Tree
Scientific Names: , Bolusanthus speciosus, Lonchocarpus speciosus, Bolusanthus speciosus f. albescens,
GBIF Accepted Name: Bolusanthus speciosus (Bolus) Harms