Cannabis Plant Problem Diagnosis Tool
Identify common cannabis growing issues by visual symptoms. Click on any image to see detailed information about nutrient deficiencies, environmental stresses, and solutions. For specific pest and disease information, see our comprehensive Pest & Disease Management Guide. You can also chat with our AI Herbal Advisor 💬 for personalized help.
Nitrogen Deficiency
Yellowing starting from lower leaves
Phosphorus Deficiency
Dark purple stems and leaf veins
Potassium Deficiency
Burnt leaf edges and brown spots
Magnesium Deficiency
Yellowing between leaf veins
Calcium Deficiency
Distorted new growth and brown spots
Zinc Deficiency
Yellowing between veins in new growth
Iron Deficiency
Yellow new growth with green veins
Boron Deficiency
Twisted new growth and stunted plants
Sulphur Deficiency
Pale yellow new growth
Manganese Deficiency
Patchy yellowing in newer growth
Nutrient Burn
Brown, crispy leaf tips from overfeeding
Nutrient Lockout
Multiple deficiency symptoms despite feeding
Overwatering
Drooping leaves that feel firm and swollen
Underwatering
Dry, wilting leaves with thin appearance
Root Rot
Progressive yellowing, wilting, and stunted growth
Light Burn
Yellow/brown top leaves, upward curling
Heat Stress
Leaves folding upward like a taco
Light Leak
Single-finger leaves or hermaphrodite traits
Cold Damage
Purple/blue colouration and slow growth
Wind Burn
Twisted, curled leaves with dry edges
pH Imbalance
Varied deficiency symptoms despite feeding
Problem Title
Symptoms
Causes
Solutions
Similar Problems
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