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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. Bacteria may infect ...
Marcescence is most obvious in deciduous trees that retain leaves through the winter. Several trees normally have marcescent leaves such as oak (Quercus), [5] beech (Fagus) and hornbeam (Carpinus), or marcescent stipules as in some but not all species of willows . [6] All oak trees may display foliage marcescence, even species that are known to ...
This brown papery and spiky seed pod stays on long after the leaves have fallen. In poorly drained locations, the tree can still grow but it becomes more open in shape with leaves on the end of long branches - a 'stag-headed' appearance. [5] [6] It is referred to as a blood wood tree: when it is cut, it appears to bleed because of dark red sap. [7]
Oak wilt is a fungal caused by Bretziella fagacearum, is a disease originating in eastern Russia. It can slowly or quickly kill an oak tree when the tree reacts to the fungus by plugging its own cambial tissue while attempting to block the spread of the fungus. This plug prevents the cambium vascular tissue from delivering nutrients and water ...
"Oak trees are great in the landscape, but its leaves, its acorns and its seedlings drive me nuts in my garden. Tallamy glosses over that a lot of native plants are not suitable for urban landscapes."
The disease kills oak and other species of trees and has had devastating effects on the oak populations in California and Oregon, as well as being present in Europe. Symptoms include bleeding cankers on the tree's trunk and dieback of the foliage , in many cases leading to the death of the tree.
Toxicodendron vernicifluum (formerly Rhus verniciflua [1]), also known by the common name Chinese lacquer tree, [1] [2] [3] is an Asian tree species of genus Toxicodendron native to China and the Indian subcontinent, and cultivated in regions of China, Japan and Korea. [4]
Local woodworker Garrett Roberson is transforming a tree that was older than the McPherson Mansion when it fell into furniture for the historic site. An historic red oak blew over, but will still ...
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