Contents
Description
Fraxinus Latifolia, commonly known as Oregon Ash, is a deciduous tree that belongs to the olive family. It is native to western North America, mainly found in the Pacific Northwest region. The tree can grow up to 80 feet tall and 2-3 feet in diameter. It has a straight trunk and a dense, rounded crown. The bark is light grey and develops deep fissures with age. The tree produces flowers in the spring, which are followed by clusters of winged seeds.
Taxonomic Information
| Domain | Eukaryota |
| Kingdom | Plantae |
| Phylum | Spermatophyta |
| Class | Magnoliopsida |
| Order | Lamiales |
| Family | Oleaceae |
| Genus | Fraxinus |
Appearance
Oregon Ash has compound leaves that are 6-12 inches long with 5-7 leaflets. The leaflets are elliptical and have serrated edges. The leaves turn yellow in the fall before dropping. The tree produces flowers in the spring, which are small and inconspicuous. The fruit is a samara, which is a winged seed that matures in the fall. The samaras are 1-2 inches long and have a distinctive paddle shape.
Care Guide
Oregon Ash prefers moist, well-drained soil and full sun to partial shade. It is adaptable to a range of soil types but prefers slightly acidic soil. The tree requires regular watering, especially during the first few years of growth. Fertilize the tree once a year in the spring with a balanced fertilizer. Oregon Ash is hardy in USDA zones 7-9.
Common Pests & Diseases
Oregon Ash is susceptible to various pests and diseases. Common pests include ash borer, ash leaf curl aphid, and ash sawfly. Diseases that affect the tree include ash yellows, ash anthracnose, and verticillium wilt. Regular inspection and treatment can help prevent damage from pests and diseases.
Habitat
Oregon Ash is native to western North America, mainly found in the Pacific Northwest region. It grows in a variety of habitats, including wetlands, riparian areas, and forests. The tree provides habitat and food for various wildlife, including birds and mammals.
Question and Answer
Q: Is Oregon Ash a good shade tree?
A: Yes, Oregon Ash is a good shade tree that can grow up to 80 feet tall with a dense, rounded crown.
Q: How often should I water Oregon Ash?
A: Oregon Ash requires regular watering, especially during the first few years of growth. Water the tree deeply once a week during dry periods.
Q: What is the best time to fertilize Oregon Ash?
A: Fertilize Oregon Ash once a year in the spring with a balanced fertilizer.
Q: What are the common pests that affect Oregon Ash?
A: Common pests that affect Oregon Ash include ash borer, ash leaf curl aphid, and ash sawfly.
Related Plants
- Fraxinus Americana (White Ash)
- Fraxinus Excelsior (European Ash)
- Fraxinus Pennsylvanica (Green Ash)
References
- Bonner, F.T., & Karrfalt, R.P. (2008). The Woody Plant Seed Manual. Washington, DC: USDA Forest Service.
- Dirr, M.A. (2009). Manual of Woody Landscape Plants. Champaign, IL: Stipes Publishing.
- University of California Agriculture and Natural Resources. (n.d.). Oregon Ash. Retrieved from http://ipm.ucanr.edu/PMG/GARDEN/PLANTS/oregonash.html
