Contents
Description
Salix Humboldtiana, commonly known as the Humboldt Willow, is a deciduous shrub or small tree that belongs to the family Salicaceae. It is native to the western United States, particularly to California, where it grows in riparian areas, wetlands, and mountain meadows. It can grow up to 30 feet tall and 20 feet wide, with a dense and rounded crown.
Taxonomic Information
| Domain | Eukaryota |
|---|---|
| Kingdom | Plantae |
| Phylum | Tracheophyta |
| Class | Magnoliopsida |
| Order | Malpighiales |
| Family | Salicaceae |
| Genus | Salix |
Appearance
Salix Humboldtiana has narrow and lance-shaped leaves that are shiny green on top and pale green underneath. They are about 2 to 5 inches long and 1/2 to 1 inch wide, with finely serrated margins. The bark is smooth and gray, becoming rough and fissured with age. The branches are slender and flexible, with yellow-green twigs that turn reddish-brown in the second year. In late winter or early spring, it produces yellow-green catkins that are 2 to 3 inches long.
Care Guide
Water
Salix Humboldtiana prefers moist to wet soil, so regular watering is essential, especially during the growing season. The soil should never dry out completely, but it should not be waterlogged either, as this can lead to root rot.
Fertilization
Salix Humboldtiana does not require frequent fertilization, but a light application of balanced fertilizer in early spring can promote healthy growth. Avoid fertilizing in late summer or fall, as this can interfere with dormancy.
Soil
Salix Humboldtiana thrives in rich, well-draining soil that is slightly acidic. It can tolerate a wide range of soil types, from sandy to clayey, as long as they are moist.
Sunlight
Salix Humboldtiana prefers full sun to partial shade, but it can tolerate some shade, especially in hot climates. However, too much shade can make it grow lanky and weak.
Hardiness Zones
Salix Humboldtiana is hardy in USDA zones 7 to 10, which means it can tolerate temperatures as low as 0°F.
Common Pests & Diseases
Salix Humboldtiana is generally resistant to pests and diseases, but it can be susceptible to aphids, spider mites, and leaf spot. Regular inspection and pruning can help prevent infestations and infections.
Habitat
Salix Humboldtiana is native to the western United States, particularly to California, where it grows in riparian areas, wetlands, and mountain meadows. It prefers moist to wet soil and can tolerate periodic flooding.
Question and Answer
Q: Is Salix Humboldtiana a good shade tree?
A: Salix Humboldtiana can tolerate some shade, but it is not a good shade tree as it prefers full sun to partial shade.
Q: How fast does Salix Humboldtiana grow?
A: Salix Humboldtiana is a relatively fast-growing shrub or small tree, with an average growth rate of 1 to 2 feet per year.
Q: Can Salix Humboldtiana be grown in containers?
A: Salix Humboldtiana can be grown in containers, but it requires frequent watering and fertilization, as well as occasional pruning to control its size.
Q: Does Salix Humboldtiana produce fruit?
A: No, Salix Humboldtiana does not produce fruit. It reproduces by seed or vegetative propagation.
Related Plants
- Salix Bebbiana
- Salix Nigra
- Salix Babylonica
- Salix Purpurea
- Salix Alba
References
- Dirr, M. A. (2011). Manual of woody landscape plants: their identification, ornamental characteristics, culture, propagation and uses. Stipes Publishing.
- Hickman, J. C. (Ed.). (1993). The Jepson manual: higher plants of California. University of California Press.
- Missouri Botanical Garden. (n.d.). Salix Humboldtiana. Retrieved from http://www.missouribotanicalgarden.org/PlantFinder/PlantFinderDetails.aspx?kempercode=c669
- RHS. (n.d.). Salix Humboldtiana. Retrieved from https://www.rhs.org.uk/Plants/18557/Salix-Humboldtiana/Details
