The good news, their working on the bugs Tree
the bad news. their only in the A's as of now
Acacia broom rust Kavenelia pringlei
Adelopus needle cast
(Douglas-fir)
See Swiss needle cast
Amelanchier rust Gymnosporangium harknessianum
Amelanchier witches' broom Apiosporina collinsii
American spruce-raspberry rust Pucciniastrum americanum
Annosus root disease
(conifers)
Heterobasidion annosum
Anthracnose
(hardwoods)
Gnomonia veneta
Apache dwarf mistletoe
(southwestern white pine)
Arceuthobium apachecum
Applanatus rot
(hardwoods, conifers)
See white mottled rot
Arctic spruce-raspberry rust Pucciniastrum arcticum
Arizona cypress rust Gymnosporangium cunninghamianum
Armillaria root disease
(conifers, hardwoods)
Armillaria mellea 1
Artist's conk
(hardwoods, conifers)
Ganoderma applanatum
Ash heart rot Perenniporia fraxinophila
Aspen gall Diplodia tumefaciens
Aspen trunk rot Phellinus tremulae
Aster rust
(pines)
See western pine-aster rust
Atropellis canker
(hard pines)
Atropellis piniphila
Bacterial gall of Douglas-fir See Douglas-fir bacterial gall
Erwinia nimipressuralis or
possibly other bacteria
Bacterial tree uk wetwood
(hardwoods)