Oak wilt

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oak_wiltThe City of Cedar Park cares for all trees on City-owned property, which includes our City parks, facilities and City-owned rights-of-way such as certain (but not all) roadway medians.  We are providing this information on oak wilt because it is an aggressive disease that affects many species of oak (Quercus spp.) - which are extremely common in Cedar Park. Oak wilt is one of the most serious tree diseases in the eastern United States, killing thousands of oaks each year in forests, woodlots, and home landscapes.  We hope that you find this information helpful.

Oak wilt was first identified in 1944. The fungal pathogen that causes the disease, Ceratocystis fagacearum, is thought by most to be native to the eastern United States, but difficulty in isolating and identifying the fungus delayed recognition of the extent of its impact until the 1980's. Some plant pathologists think that oak wilt is an exotic disease, arriving in North America in the early 1900's, but the fungus has never been reported from any country other than the United States. The disease has also become much more apparent in some local areas since the 1980's because of increased tree wounding, due primarily to home construction in oak woods.

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