Worrall, J. 2004. Armillaria root disease. The Plant Health Instructor. DOI:10.1094/PHI-I-2004-0706-01

DISEASE: Armillaria root disease, shoestring root rot

PATHOGEN: Armillaria species

HOSTS: Many woody angiosperms (hardwoods) and gymnosperms (conifers) in native forests, planted forests, orchards, vineyards, and in amenity plantings in urban areas. Some nonwoody plants are also hosts.

Author
Jim Worrall
USDA Forest Service, Gunnison, CO, U.S.

Armillaria gallica mushrooms on an old stump,
New York, U.S. (Courtesy J. Worrall)