USDA zones 6-8 Image Courtesy of Pat Breen, Oregon State University There are 18 types of ash trees in this country, and ash is a common component of many forests. The Evergreen State chose, not surprisingly, the Western Hemlock as its state tree. • The round, full crown shape of mature trees is similar to that of black locust. Ash trees are considered the primary host for P. americanus, the Wooly Ash Aphid, and noble fir trees, the secondary host. The ash tree is a strong, medium to very large tree, depending on type, and a relative of the olive tree. The seeds of ashes, popularly known as keys, are a … Oregon Ash The Olive Family–Oleaceae Fraxinus latifolia Benth. Washington Trees For Sale. True ash trees are in the Fraxinus genus together with olive trees. Distribution: Oregon Ash is found from […] Zone 2-8. They are actually root aphids feeding on fir trees part of the time as you will see below. Ash tree's opposite branching, means there is a stem with leaf opposite each other on a branch, as seen in the Ash Leaf picture. Relationships: There are about 65 species of Ashes, mostly in the temperate regions of the northern hemisphere. Gift subscriptions. EAB, also known as emerald ash borer, is an invasive, wood-boring beetle known to attack and kill ash trees. These trees grow between 13 and 24 inches every year to an eventual height of 50 to 80 feet. There is speculation that EAB entered the U.S.… A medium sized slender tree, often growing in clumps. They can be very annoying to people. About 16 species occur in North America. Wooly ash aphids are the little “gnats” that swarm in the evening this time of year. The Ash Tree leaf pattern is unique from most trees in that it has distinctive opposite branching and can be a helpful key in identifying Ash Trees. Likes moist ground. Rapid growth. Read on for information on different types and tips on ash tree identification. Invasion History Originally native to China, EAB was first discovered in Michigan in 2002. Order trees, plants, and supplies online now. Quaking aspen is native to more states than any other tree but not common in Oregon or Washington. Ash trees are fast growing trees, usually medium to large in height, and mostly deciduous though a few subtropical species are evergreen. Types of Ash Trees. While coniferous species are the most prevalent types of trees found in Washington State, the region is not devoid of hardwoods. Bright yellow fall color. Contact for fast-growing evergreen trees and fruit trees. (FRAKS-ih-nus lat-ih-FOAL-ee-uh) Names: Latifolia means “wide leaves.” Oregon Ash has wider leaflets than most Ashes. The ash tree is a handsome, native, deciduous tree. • Oregon ash leaflets are larger than those of black locust. Ash trees have an opposite branching structure, with multiple leaflets. Try one month for $1 Gift subscriptions; Username; Sign In. There are over 60 ash tree species— the white ash being the largest of the family. The Washington Post logo. • Similar in height to locust, Oregon ash can grow up to 80 feet. Heart shaped leaves that flutter in the slightest breeze. They can grow into tall shade trees. Democracy Dies in Darkness. Ash trees are in the Fraxinus genus within the olive (Oleaceae) family of woody plants.They are often used as shade, lawn, and street trees, and were once the most-planted urban tree across the U.S. You can identify ashes by looking for trees with opposite branching (not many trees do this) and compound leaves formed by clusters of leaflets. Raintree Nursery offers quality nursery products. No, it’s not in Washington state yet, but could be in the near future. One species of oak is native to Washington as are several kinds of willows, various poplars, some birches and other hardwoods.