1. Think about the tree's location, contribution to the landscape and its sentimental value to decide if treatment is worth it. They want people in 10 counties in southeast Michigan and 7 counties in northwest Ohio to report the location of ash trees that have survived the infestation. In the wake of Dutch Elm Disease, many Michigan communities planted mostly ash to replace the dead elm trees, setting the stage. Leaflets whitish beneath and minutely papillose (or densely pitted in appearance) [30–40×], the lateral ones on petiolules often 5–10 mm long; leaves and young twigs glabrous or nearly so (sometimes with hairs along main veins of leaflets beneath); samaras with distended portion over the seed ca. The Northern Research Station has launched a new online reporting tool. Identifying ash trees Due to the recent discovery of the emerald ash borer (EAB) in Michigan, it is important to be able to recognize and identify ash trees. It contains 45-65 species of usually medium to large trees, mostly deciduous though a few subtropical species are evergreen. It was detected for the first time in Pennsylvania in late June 2007. Ash species attacked by emerald ash borer include green (Fraxinus pennsylvanica), white (F. americana), black (F. nigra), and blue (F. quadrangulata), as well as horticultural cultivars of these species. But European Mountain Ash (Sorbus aucuparia) trees can grow to be about 65 feet tall, which is more than twice the size of … Threats to the forests are Birch bark disease, emerald ash borer (EAB), and hemlock wooly adelgid. 4–6.5 (–7) times as long as wide (measured at middle), winged only along apical half or less of the seed. The Emerald Ash Borer (EAB) has been with us since it was first discovered in Michigan back in 2003. EAB were first detected in Michigan in 2002, and have since spread across 35 states through various wood products, including firewood and trees sold for planting. EAB is easily spread through the movement of firewood, logs and nursery stock. 2. She explains where to look for the trees and why: Fraxinus excelsior L., the European ash, is sometimes planted and may be found in Michigan as it is known to escape in adjacent Ontario. Blue ash is equally tall and can be identified by its squared stems. Leaflets green beneath, not papillose, the lateral ones on petiolules rarely as long as 5 mm (usually shorter and often winged to the base, but much longer in the rare F. profunda); leaves and young twigs densely pubescent to glabrous; samaras with distended portion ca. The tree's common English name, ash, goes back to the Old English æsc, while the generic name originated in Latin. "Lingering ash." Fruit is a large dark brown nut inside a green husk. Fruit are hard-shelled nuts in a green husk. (6.5–) 7–10 mm broad; leaflets pubescent beneath. Contact Us (616) 866-9317. 3. Elder's Forest Products Standing Timber Buyer. White Poplar, Eastern Poplar, Lombardy Poplar, Balsam Poplar, Tulip Poplar . The first cases were found in Michigan in 2002 but since then it’s spread to neighboring states and is likely to keep expanding its range. 2. Since the inconspicuous flowers are often unisexual (plants dioecious or polygamous), vegetative features are stressed in the key. February 11, 2016 EAB was found in northern Aroostook County in May 2018, western York County in September 2018, and Cumberland County in September 2019. Jeffrey W. Dwyer, Director, MSU Extension, East Lansing, MI 48824. Lateral leaflets definitely sessile, 6–10; flowers without a calyx; samara strongly flattened, scarcely if at all thickened over the seeds, ca. It has killed more than 40 million ash trees in the states of Michigan, Ohio, Indiana, Maryland, and Illinois. The tree-killing pest has been found in all but four of Michigan’s 83 counties. An ash tree that has lost more than half of its leaves because of EAB should likely be removed, according to USDA research. The first time I heard of emerald ash borer (EAB) was in my dendrology class in 2009 at Michigan State University. The tallest tree currently in Michigan is actually a red maple, claiming the title after an old growth eastern white pine fell. Red and eastern white pines can be found in the southern half where the forests change from northern hardwood type to old growth pine forests. - In much of the rest of the state's lower peninsula, there are few trees left to fight for. Issued in furtherance of MSU Extension work, acts of May 8 and June 30, 1914, in cooperation with the U.S. Department of Agriculture. Even before the onset of emerald ash borer, concerned arborists had put a moratorium on ash and maple planting and begun planting less common trees. To date, emerald ash borer has only been found on ash trees (see page 4). 3. Reference to commercial products or trade names does not imply endorsement by MSU Extension or bias against those not mentioned. Ash Tree Facts and Information Fraxinus is a genus flowering plants in the olive and lilac family, Oleaceae. Lateral leaflets (at least the lower ones) petiolulate (with at least a short though sometimes winged stalk), 4–8; flowers with a calyx (persistent at base of fruit); samara distinctly thickened over the mature seed, ca. Exhibits opposite branching and compound leaves. Fraxinus excelsior L., the European ash, is sometimes planted and may be found in Michigan as it is known to escape in adjacent Ontario. The fruit is conspicuously winged, a samara much like that of the maples but not in pairs. Growth is often slow because of site limitations. MSU is an affirmative-action, equal-opportunity employer. On their own, this species doesn’t spread very far. The insect simply flew from one tree to the next, spreading like wildfire. The emerald ash borer (EAB), Agrilus planipennis, is an invasive highly destructive wood-boring insect that attacks ash trees. An exotic metallic green beetle is eating its way through North American forests, leaving dead ash trees in its wake. The culprit is the emerald ash borer, Agrilus planipennis Fairmaire, an exotic Asian beetle discovered in southeastern Michigan near Detroit in the summer of 2002. By planting mostly one species, many communities lost nearly all their trees once the beetle reached them. Choose from this list and score one for diversity. While other woody plants, such as mountainash and pricklyash, have “ash” in their name, they are not true ash, or Fraxinus species. Black Ash, Green Ash, White Ash, Blue Ash. Asian ash species may be more resistant. 1. Black Ash (Fraxinus nigra) The wood structure of black ash makes it a great choice for weaving, as … Adults typically only fly about ½ mile. Michigan State University Extension programs and materials are open to all without regard to race, color, national origin, gender, religion, age, disability, political beliefs, sexual orientation, marital status, or family status. 0.5–2 (–2.5) mm long; wing of samara (4–) 4.5–6.5 (–8.5) mm broad; leaflets glabrous or pubescent beneath. 4. This tree has been referred to as a variety of different names in literature: Rowantree, rowan berry, roundwood, mountain sumac, winetree, dogberry, service tree, wild ash, quickbeam, life-of-man, Indian mozemize, missey-moosey and mose-misse. Beyond its landscape value, the tree has made its mark as the wood used to make baseball bats. On young trees (right), bark is relatively smooth. While some patches are worse than others, it’s hard to find a lot of live ash trees in Lower Michigan and much of the eastern and central Upper Peninsula. Found across the middle of the seed smooth, grayish bark and beautiful! 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