Hemlock: Annosus root rot
Hemlock: Annosus root rot categories: Conifers Hemlock Hemlock Diseases Ornamentals revision date: 2023-01-31 12:00 Annosus root rot decayed wood with black flecksPhoto by: B.M. Johnson Biology Annosus root rot is caused by the fungus Heterobasidion annosum. This native soil pathogen is often in large old tree stumps. It can live several decades as a saprophyte […]