Cannabis is susceptible to a variety of diseases that can affect its growth and yield. In this post, we’ll provide a step-by-step guide to help you diagnose common diseases.
1. Examine the Plant for Symptoms
Start by examining the plant for any visible symptoms. Look for signs of spots on the leaves, wilting, yellowing, or any other abnormalities.
2. Identify the Type of Spots
If you see spots on the leaves, try to identify the type of spots. Are they white and powdery? If so, the plant may have powdery mildew. If not, proceed to the next step.
3. Examine the Plant for Other Symptoms
If there are no spots on the leaves, examine the plant for other symptoms such as wilting or yellowing.
4. Identify the Color and Location of the Spots
If the spots are gray and fuzzy and are located on the flowers or leaves, the plant may have Botrytis (gray mold).
5. Examine the Roots of the Plant
If you see signs of wilting or yellowing, examine the roots of the plant. If the roots are brown and rotting, the plant may have root rot.
6. Examine the Plant for Viral Symptoms
Look for signs of yellowing, stunting, or deformation, which may indicate a viral disease.
7. Identify the Color and Shape of the Spots
If the spots are brown and irregularly shaped, the plant may have Septoria leaf spot.
8. Identify the Type of Wilting or Yellowing
If the wilting or yellowing is concentrated in one area of the plant, it may have Fusarium wilt.
9. Examine the Plant for Rust Symptoms
Look for orange or brown spots on the leaves, which may indicate rust.
10. Identify the Color and Shape of the Spots
If the spots are white and cottony, the plant may have white mold (Sclerotinia).
11. Examine the Plant for Downy Mildew Symptoms
Look for yellow spots on the leaves, which may indicate downy mildew.