This is a list of diseases of hemp (Cannabis sativa).
Bacterial diseases Bacterial diseasesBacterial blight Pseudomonas cannabinaCrown gall Agrobacterium tumefaciensStriatura ulcerosa Pseudomonas amygdali pv. moriXanthomonas leaf spot Xanthomonas campestris pv. cannabis
Fungal diseases Fungal diseasesAnthracnose Colletotrichum coccodes Colletotrichum atramentarium Colletotrichum dematiumBlack dot disease Epicoccum nigrum Epicoccum purpurascensBlack mildew Schiffnerula cannabisBrown blight Alternaria alternata Alternaria tenuisBrown leaf spot and stem canker Ascochyta spp. Ascochyta prasadii Phoma spp. Didymella spp. [teleomorph] Phoma exigua Phoma glomerata Phoma herbarumCharcoal rot Macrophomina phaseolinaCladosporium stem canker Cladosporium cladosporioides Cladosporium herbarum Mycosphaerella tassiana [teleomorph] Curvularia leaf spot Curvularia cymbopogonis Curvularia lunata Cochliobolus lunatus [teleomorph] Cylindrosporium blight Cylindrosporium spp. Cylindrosporium cannabinumDamping-off Botrytis cinerea Botryotinia fuckeliana [teleomorph] Fusarium oxysporum Fusarium solani Nectria haematococca [teleomorph] Macrophomina phaseolina Pythium aphanidermatum Pythium debaryanum Pythium ultimum Rhizoctonia solani Thanatephorus cucumeris [teleomorph] Pellicularia filamentosaDowny mildew Pseudoperonospora cannabina Pseudoperonospora humuliFusarium foot rot and root rot Fusarium solaniFusarium stem canker Fusarium sulphureum Gibberella cyanogena [teleomorph] Gibberella saubinetiiFusarium wilt Fusarium oxysporum f.sp. cannabis Fusarium oxysporum f.sp. vasinfectumGray mold Botrytis cinereaHemp canker Sclerotinia sclerotiorumLeptosphaeria blight Leptosphaeria cannabina Leptosphaeria woroninii Leptosphaeria acutaOlive leaf spot Cercospora cannabis Pseudocercospora cannabinaOphiobolus stem canker Ophiobolus cannabinus Ophiobolus anguillidesPhoma stem canker Phoma herbarum Phoma exiguaPhomopsis stem canker Phomopsis cannabina Phomopsis achilleae Diaporthe arctii var. achilleae [teleomorph] Phymatotrichum root rot Cotton root rotPhymatotrichopsis omnivora Phymatotrichum omnivorumPink rot Trichothecium roseum Cephalothecium roseum Podosphaera macularis
Golovinomyces ambrosiae complexRed boot Melanospora cannabis (secondary on hemp canker) Rhizoctonia soreshin and root rot Rhizoctonia solaniRust Aecidium cannabis Uredo kriegeriana Uromyces inconspicuusSouthern blight Sclerotium root and stem rotSclerotium rolfsii Athelia rolfsii [teleomorph] Stemphylium leaf and stem spot Stemphylium botryosum Pleospora tarda [teleomorph] Stemphylium cannabinumTar spot Phyllachora cannabisTropical rot Lasiodiplodia theobromae Botryodiplodia theobromaeTwig blight Dendrophoma marconii Botryosphaeria marconii [teleomorph] Verticillium wilt Verticillium albo-atrum Verticillium dahliaeWhite leaf spot Phomopsis ganjaeYellow leaf spot Septoria cannabis Septoria cannabina
Nematodes, parasitic Nematodes, parasiticCyst Heterodera humuli Heterodera schachtiiNeedle Paralongidorus maximus Longidorus maximusRoot-knot Meloidogyne incognita Meloidogyne javanicaStem Ditylenchus dipsaci
Viral diseases Viral diseasesAlfalfa mosaic & Lucerne mosaic genus Alfamovirus, Alfalfa mosaic virus (AMV)Arabis mosaic genus Nepovirus, Arabis mosaic virus (ArMV) Cucumber mosaic genus Cucumovirus, Cucumber mosaic virus (CMV) Hemp mosaic genus ?Tobamovirus Hemp streak genus ?, Hemp streak virus
Phytoplasmal diseases Phytoplasmal diseasesWitches' broom
Miscellaneous diseases and disorders Miscellaneous diseases and disordersFasciation Cause undetermined Grey fleck Magnesium deficiency Tipburn & leaf margin necrosis Potassium deficiency
References
Common Names of Diseases, The American Phytopathological Society The Pacific Northwest Plant Disease Management Handbook