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Beech bark disease is a disease that causes mortality and defects in beech trees in the eastern United States, Canada and Europe. [ 1 ] [ 2 ] [ 3 ] In North America , the disease occurs after extensive bark invasion by Xylococculus betulae and the beech scale insect , Cryptococcus fagisuga . [ 4 ]
Cryptococcus fagisuga, commonly known as the beech scale or woolly beech scale, is a felted scale insect in the superfamily Coccoidea that infests beech trees of the genus Fagus. It is associated with the transmission of beech bark disease [ 3 ] because the puncture holes it makes in the bark allow entry of pathogenic fungi which have been ...
Beech trees make up about 10% to 15% of the state’s total forest trees and up to 50% in some areas in Washington County, according to estimates from Fern Graves, forest stewardship program ...
Beech leaf disease is a newly discovered lethal disease of beech trees believed to be caused by the nematode Litylenchus crenatae mccannii. [1] The symptoms of the disease appear as a dark green, interveinal banding pattern on the lower canopy foliage, eventually spreading throughout the tree.
Two of my favorite spring plants, almost entirely based upon their progression from bud to leaf, are beech trees and false hellebore. Two of my favorite spring plants, almost entirely based upon ...
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 fully drop leaves when the tree is mature. [7] Marcescent leaves of pin oak (Quercus ...
Myrtle wilt, a parasitic fungus, (Chalara australis) attacks myrtle beech when the air or water-borne spores settle on open wounds. Myrtle wilt only infects N. cunninghamii and is a deadly pathogen that infects roots and trunks. It causes tree crown wilting and foliage to turn brown and yellow.
Columnist Bill Lamont noticed that some of his trees looked like October foliage in August.