This article is a list of diseases of Douglas-fir (Pseudotsuga menziezii).

Fungal diseases

Fungal diseasesAnnosus root disease Heterobasidion annosum Spiniger meineckellum [anamorph] Armillaria root disease Armillaria solidipes Armillaria spp. Black stain root disease Leptographium wageneri var. pseudotsugaeBlue stain fungus Grosmannia clavigeraBleeding sap rot Stereum sanguinolentumBrown crumbly rot Fomitopsis pinicolaBrown cubical rot Laetiporus sulphureusBrown trunk rot Fomitopsis officinalisCharcoal root disease Macrophomina phaseolinaConifer – aspen rust Melampsora medusaeConifer – cottonwood rust Melampsora occidentalisCytospora canker Leucostoma kunzei Cytospora kunzei [anamorph] Valsa abietis Cytospora abietis [anamorph] Damping-off Fusarium spp. Phytophthora spp. Pythium spp. Rhizoctonia spp. Dermea canker Dermea pseudotsugaeDime canker Durandiella pseudotsugaeFusarium hypocotyl rot Fusarium oxysporumGray-brown sap rot Cryptoporus volvatusGray mold Botrytis cinerea Botryotinia fuckelinana [teleomorph] Laminated root rot Phellinus weiriiPhoma seedling blight Phoma eupyrenaPhomopsis canker Diaporthe lokoyae Phomopsis lokoyae [anamorph] Phytophthora root rot Phytophthora spp. Pitted sap rot Trichaptum abietinumRed-brown butt rot Phaeolus schweinitziiRed ring rot Phellinus piniRhabdocline needle cast Rhabdocline pseudotsugae Rhabdocline weiriiRhizina root disease Rhizina undulataRose fomes rot Fomitopsis cajanderiRust-red stringy white rot Echinodontium tinctoriumSclerophoma dieback Sydowia polyspora Sclerophoma pythiophila [anamorph] = Sclerophoma semenospora [anamorph] Snow blight Phacidium abietisSnow/needle blightPhacidium infestansSparrasis root rot Sparrasis crispaStringy butt rot Perenniporia subacidaSwiss needle cast Nothophaeocryptopus gaeumanniiTomentosus root rot Inonotus tomentosusUpper stem canker Phoma eupyrena Fusarium avenaceum Fusarium sambucinumWhite stringy rot Resinicium bicolor

References Common Names of Diseases, The American Phytopathological Society