Diseases of Cannabis

This is a list of Cannabis diseases. They have hyperlinks to relevant articles.

Bacterial diseases

Bacterial blight

Pseudomonas cannabina

Crown gall

Agrobacterium tumefaciens

Striatura ulcerosa

Pseudomonas amygdali pv. mori

Xanthomonas leaf spot

Xanthomonas campestris pv. cannabis

 

Fungal diseases

Anthracnose

Colletotrichum coccodes
Colletotrichum atramentarium
Colletotrichum dematium

Black dot disease

Epicoccum nigrum
Epicoccum purpurascens

Black mildew

Schiffnerula cannabis

Brown blight

Alternaria alternata
Alternaria tenuis

Brown leaf spot and stem canker

Ascochyta spp.
Ascochyta prasadii
Phoma spp.
Didymella spp. [teleomorph]
Phoma exigua
Phoma glomerata
Phoma herbarum

Charcoal rot

Macrophomina phaseolina

Cladosporium stem canker

Cladosporium cladosporioides
Cladosporium herbarum
Mycosphaerella tassiana [teleomorph]

Curvularia leaf spot

Curvularia cymbopogonis
Curvularia lunata
Cochliobolus lunatus [teleomorph]

Cylindrosporium blight

Cylindrosporium spp.
Cylindrosporium cannabinum

Damping-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 filamentosa

Downy mildew

Pseudoperonospora cannabina
Pseudoperonospora humuli

Fusarium foot rot and root rot

Fusarium solani

Fusarium stem canker

Fusarium sulphureum
Gibberella cyanogena [teleomorph]
Gibberella saubinetii

Fusarium wilt

Fusarium oxysporum f.sp. cannabis
Fusarium oxysporum f.sp. vasinfectum

Gray mold

Botrytis cinerea

Hemp canker

Sclerotinia sclerotiorum

Leptosphaeria blight

Leptosphaeria cannabina
Leptosphaeria woroninii
Leptosphaeria acuta

Olive leaf spot

Cercospora cannabis
Pseudocercospora cannabina

Ophiobolus stem canker

Ophiobolus cannabinus
Ophiobolus anguillides

Phoma stem canker

Phoma herbarum
Phoma exigua

Phomopsis stem canker

Phomopsis cannabina
Phomopsis achilleae
Diaporthe arctii var. achilleae [teleomorph]

Phymatotrichum root rot

Cotton root rot

Phymatotrichopsis omnivora

Phymatotrichum omnivorum

Pink rot

Trichothecium roseum

Cephalothecium roseum

Powdery mildew

Leveillula taurica
Oidiopsis taurica [anamorph]
Sphaerotheca macularis
Sphaerotheca humuli
Oidium sp. [anamorph]

Red boot

Melanospora cannabis (secondary on hemp canker)

Rhizoctonia soreshin and root rot

Rhizoctonia solani

Rust

Aecidium cannabis
Uredo kriegeriana
Uromyces inconspicuus

Southern blight

Sclerotium root and stem rot

Sclerotium rolfsii
Athelia rolfsii [teleomorph]

Stemphylium leaf and stem spot

Stemphylium botryosum
Pleospora tarda [teleomorph]
Stemphylium cannabinum

Tar spot

Phyllachora cannabis

Tropical rot

Lasiodiplodia theobromae
Botryodiplodia theobromae

Twig blight

Dendrophoma marconii
Botryosphaeria marconii [teleomorph]

Verticillium wilt

Verticillium albo-atrum
Verticillium dahliae

White leaf spot

Phomopsis ganjae

Yellow leaf spot

Septoria cannabis
Septoria cannabina

 

 

Nematodes, parasitic

Cyst

Heterodera humuli
Heterodera schachtii

Needle

Paralongidorus maximus
Longidorus maximus

Root-knot

Meloidogyne incognita
Meloidogyne javanica

Stem

Ditylenchus dipsaci

 

Viral diseases

Alfalfa mosaic & Lucerne mosaic

genus AlfamovirusAlfalfa mosaic virus (AMV)

Arabis mosaic

genus NepovirusArabis mosaic virus (ArMV)

Cucumber mosaic

genus CucumovirusCucumber mosaic virus (CMV)

Hemp mosaic

genus ?Tobamovirus

Hemp streak

genus ?, Hemp streak virus

 

Phytoplasmal diseases

Witches’ broom

 

 

Miscellaneous diseases and disorders

Fasciation

Cause undetermined

Grey fleck

Magnesium deficiency

Tipburn & leaf margin necrosis

Potassium deficiency

 

 

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