Cannabis Diseases Glossary

Cannabis Diseases Glossary Table of Contents

This review is dedicated to most common cannabis diseases, their causality and symptoms as described in scientific literature.

I. Fungi

  1. Botrytis cinerea (gray mold)
  2. Sclerotinia sclerotiorum (hemp canker)
  3. Pythium aphanidermatum, Pythium ultimum, Rhizoctonia solani, Botrytis cinerea, Macrophomina phaseolina, Fusarium (F. solani, F. oxysporum, F. sulphurem, F. avenaceum, F. graminearum) (damping off)
  4. Septoria species (yellow spot leaf)
  5. Phoma and Ascochyta species (brown spot leaf)
  6. Pseudocercospora and Cercospora species (downy mildew and olive leaf spot)
  7. Trichothecium roseum (pink rot)
  8. Alternaria and Stemphylium species (brown blight)
  9. Colletotrichum species (anthracnose)
  10. Phomopsis ganjae (white leaf spot)
  11. Trichothecium roseum, Phoma, Stemphylium, Colletotrichum, Fusarium and Phomopsis species (stem cankers)
  12. Fusarium solani, Fusarium oxysporum, Macrophomina phaseolina, Rhizoctonia solani, Sclerotium rolfsii, Verticillium species (root rot)

 II. Nematodes

  1. Caenorhabditis elegans, Meloidogyne incognita, Meliodogyne hapla, Meloidogyne javanica (root knots)
  2. Ditylenchus dipsaci (stem nematode)
  3. Cyst nematodes (Heterodera schachtii, H. humuli), needle nematodes (Paralongidorus maximus), and root lesion nematodes (Pratylenchus penetrans)

III. Parasitic plants

  1. Orobanche ramose (broomrape)
  2. Cuscuta campestris and Cuscuta europea (dodder)

IV. Viruses

  1. Hemp streak virus (HSV)
  2. Hemp mozaic virus

 V. Bacteria

  1. Pseudomonas syringae pv. Cannabina and Striatura ulcerosa (bacteria blight)
  2. Uncommon bacterial diseases: crown gall by Agrobacterium tumefaciens, bacterial wilt by Erwinia tracheiphila, xanthomonas leaf spot by Xanthomonas campestris pv. Cannabis

VI. Abiotic diseases

  • Deficiencies of mobile nutrients (N, P, K, Mg, B, Mb)
  • Deficiencies of less mobile nutrients (Mn, Zn, Ca, S, Fe, Cu)

Read more about each category

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