Oregon Ash, Fraxinus latifolia - Native Plants PNW
WEBDiagnostic Characters: Oregon Ash is our only tree with compound leaves, making it easy to identify. The oppositely arranged, pinnately compound leaves have 5-7 leaflets. Flowers are small and inconspicuous, appearing before the leaves.
Recognizing ash trees in Oregon, Washington and Northern …
WEBHow to identify our native and common landscaping ash trees, including look-alikes. All ash trees are susceptible to emerald ash borer, an invasive pest first sighted in Oregon in June 2022.
Oregon ash (Fraxinus latifolia) | Oregon Wood Innovation Center
WEBOregon ash has a fairly high tolerance to summer drought; however, it generally ceases growth and drops its leaves when conditions become hot and dry. Oregon ash that establish on drier sites often persist in a stunted, crooked form.
Fraxinus latifolia - Wikipedia
WEBAfter leaves have fallen off the plant in fall and before it begins to leaf out, Oregon ash can be identified by its stout twigs and opposite branching arrangement and opposing buds. Unlike bigleaf maples, ash twigs have woolly hairs.
Fraxinus latifolia - Landscape Plants | Oregon State University
WEBHardy to USDA Zone 6 Native to western portions of Washington and Oregon and south in the Coast Range and Sierra Nevada to Central California. The only ash native to the Pacific Northwest. latifolia: with broad leaves; Oregon State Univ. campus: large tree on the north side of USDA Forage Seed Lab. on Campus Way, near 35th St.
Oregon Ash: Insects, Pathogens and Tree Health
WEBSeveral fungi cause leaf spots on Oregon ash (Table 2). These can be associated with wet spring and early summer weather, or wet late summer and early fall weather. See the Pacific Northwest Plant Disease Management Handbook for more details about the suite of foliage disease fungi.
Oregon Ash - Oregonforests 2023
WEBThe Oregon ash has unique leaves, which are elliptical in shape and have five to nine leaflets per compound leaf. Fruit is single-seeded bracts known as samaras that resemble little canoes. Understory
Oregon Ash - US Forest Service Research and Development
WEBFlowering and Fruiting-Oregon ash is dioecious; its small greenish flowers appear in dense, glabrous panicles with the leaves in April or May (8,25). The fruits, oblong to elliptical samaras, ripen in August or September.
Oregon Ash - Fraxinus latifolia - PNW Plants - Washington State …
WEBOregon Ash. A PNW native deciduous tree commonly found in wet areas in the lower reaches of the river valleys west of the Cascades. Its range extends from British Columbia to southern California. Compound opposite leaves, with 5-7 bright green, tapered leaflets. Golden yellow fall leaf color.
Oregon Ash Tree - Forestry.com
WEBOct 10, 2023 · The Oregon Ash boasts a striking appearance with its tall, straight trunk and graceful crown adorned with compound leaves. These leaves typically consist of 5 to 9 individual leaflets, which take on a vibrant, lush green color during the growing season.
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