Overview of Plant Diseases

What has been documented in cannabis so far is mostly viral, plus one viroid: HLVd, the best-studied case of them all. Each entry covers symptoms, how the pathogen travels, what testing is available, and which measures actually pay off in a home grow.

Nutrient deficiencies are not listed here. They have their own category under plant nutrition, and the split matters in practice: pale leaves and stunted growth look much the same whether a nutrient is missing or a virus is at work, and telling them apart decides what you do next.

Overview

• Cannabis Viruses: Detection, Prevention & Measures for Hobby Growers

  How hobby growers can identify and prevent viral infections in cannabis – symptoms, tests & protection at a glance.

Viruses and Viroids

• Alfalfa mosaic virus (AMV) in cannabis – symptoms, transmission, and relevance

  How does Alfalfa mosaic virus (AMV) affect cannabis? Learn more about symptoms, transmission routes, prevention, and the current implications for hobby growers.

• Arabis mosaic virus (ArMV) in cannabis – symptoms, spread, and prevention

  How Arabis mosaic virus (ArMV) infects cannabis, what symptoms appear, and what hobby growers can do to prevent its spread – explained in detail with sources.

• Beet curly top virus (BCTV) in Cannabis – Symptoms, Leafhopper Transmission, and Protection Strategies

  Beet curly top virus (BCTV) causes serious damage to outdoor-grown cannabis. Learn about symptoms, leafhopper transmission, and effective protection strategies for home growers.

• Cannabis Cryptic Virus (CanCV) – What’s Behind the 'Hidden' Virus in Hemp?

  Cannabis Cryptic Virus (CanCV) is widespread but asymptomatic. What hobby growers should know about the distribution, detection, and significance of this mysterious virus.

• Cannabis Mitovirus 1 (CasaMV1) – The Invisible Virus in Hemp?

  Cannabis Mitovirus 1 (CasaMV1) is an unusual virus found in hemp mitochondria. Learn what it is, how it’s inherited, and why it poses no threat to hobby growers.

• Cucumber Mosaic Virus in Cannabis (CMV)

  Early detection of Cucumber Mosaic Virus (CMV) in cannabis: symptoms, transmission, and effective prevention and management strategies.

• Hop latent viroid (HLVd) in Cannabis – Symptoms, Transmission, and Management

  HLVd is the best-documented pathogen in cannabis cultivation – a viroid, not a virus. Symptoms, host range, transmission (including seeds and pollen), diagnostics, and management.

• Lettuce Chlorosis Virus (LCV) in Cannabis – Symptoms, Transmission and Prevention

  Lettuce chlorosis virus (LCV) is an emerging threat to cannabis. Learn about symptoms, transmission routes, diagnostics, and prevention—especially for hobby growers.

• Potato virus Y (PVY) in Cannabis – Mosaic Symptoms, Aphid Transmission and Prevention

  Potato virus Y (PVY) causes mild, often overlooked symptoms in cannabis. Learn about transmission routes, diagnostics and preventive measures – especially for home growers.

• Tobacco Mosaic Virus (TMV) in Cannabis – Symptoms, Transmission, Significance

  What does a TMV infection mean for cannabis? Learn how Tobacco Mosaic Virus (TMV) spreads, what symptoms might appear, and how hobby growers can protect their plants.

• Tomato spotted wilt virus (TSWV) in Cannabis – Symptoms, Thrips as Vector, and Protective Measures

  Tomato spotted wilt virus (TSWV) infects numerous plant species and poses a risk to cannabis. Learn all about symptoms, thrips transmission, and effective protective strategies for home growers.