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Ptelea trifoliata, commonly known as common hoptree, [4] wafer ash, [5] stinking ash, [6] [7] and skunk bush, [7] [8] is a species of flowering plant in the citrus family . It is native to North America, where it is found in Canada, Mexico, and the United States. It is a deciduous shrub or tree, [9] [10] with alternate, trifoliate leaves.
Hymenoscyphus fraxineus is an ascomycete fungus that causes ash dieback, a chronic fungal disease of ash trees in Europe characterised by leaf loss and crown dieback in infected trees. The fungus was first scientifically described in 2006 under the name Chalara fraxinea .
Zanthoxylum americanum, the common prickly-ash, common pricklyash, common prickly ash or northern prickly-ash (also sometimes called toothache tree, yellow wood, or suterberry), is an aromatic shrub or small tree native to central and eastern portions of the United States and Canada.
Where to Plant Mountain Ash Grown with a single trunk, it’s a good choice for a small specimen tree. It usually tops out between 15 and 20 feet tall, so it works well in smaller landscapes .
European ash in flower Narrow-leafed ash (Fraxinus angustifolia) shoot with leaves. Fraxinus (/ ˈ f r æ k s ɪ n ə s /), commonly called ash, is a genus of plants in the olive and lilac family, Oleaceae, [4] and comprises 45–65 species of usually medium-to-large trees, most of which are deciduous trees, although some subtropical species are evergreen trees.
Slime flux, also known as bacterial slime or bacterial wetwood, is a bacterial disease of certain trees, primarily elm, cottonwood, poplar, boxelder, ash, aspen, fruitless mulberry and oak. A wound to the bark , caused by pruning, insects, poor branch angles or natural cracks and splits, causes sap to ooze from the wound.
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Fraxinus americana, the white ash or American ash, is a fast-growing species of ash tree native to eastern and central North America. White ash trees are threatened by the invasive emerald ash borer .