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The plant pathogenic fungus Leucostoma kunzei (formerly Valsa kunzei) is the causal agent of Leucostoma canker (also known as Cytospora canker or spruce canker), a disease of spruce trees found in the Northern Hemisphere, predominantly on Norway spruce (Picea abies) and Colorado blue spruce (Picea pungens).
Picea abies, the Norway spruce [2] or European spruce, [3] is a species of spruce native to Northern, Central and Eastern Europe. [ 4 ] It has branchlets that typically hang downwards, and the largest cones of any spruce , 9–17 cm long.
It is the primary pest of Norway Spruce. Another similar species, the Cooley spruce gall adelgid, is indigenous to North America. This adelgid usually affects Colorado Blue, Sitka, Englemann, and Oriental spruces. [4] The eastern spruce gall adelgid (Adelges abietis Linnaeus) is an introduced species that feeds only on spruce. At least in 1985 ...
First day of choose and cut was Nov. 29, open 9 a.m. to 5 p.m. Open weekends after that from 9 a.m. to 5 p.m., weekdays 8 a.m. to 5 p.m. Norway spruce, blue spruce and white pine available. Norway ...
A 63-foot (19-meter) Norway spruce from the Allegheny Mountains of West Virginia is on its way to the West Lawn of the U.S. Capitol to be the Christmas tree for 2023. Snow fell on the crew members ...
An 80-foot-tall (24-meter) Norway spruce from the Binghamton area has been selected as this year's Rockefeller Center Christmas tree and will be cut down and trucked to New York City next week ...
At the same time the Norway spruce (Picea abies) started to emigrate from the north, and the European beech (Fagus sylvatica) emigrated from the south of Europe. Though, as a primary result of production forest management at the middle of the twentieth century, P. abies and Scots pine ( Pinus sylvestris ) covers together around 75% of southern ...
Picea glauca (Moench) Voss., the White Spruce, [4] is a species of spruce native to the northern temperate and boreal forests in Canada and United States, North America.. Picea glauca is native from central Alaska all through the east, across western and southern/central Canada to the Avalon Peninsula in Newfoundland, Quebec, Ontario and south to Montana, North Dakota, Minnesota, Wisconsin ...