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Marijuana Plant Symptom Checker

Updated: 26 June 2023

by Robert Bergman

12 min. read

Comments: none

This symptom checker will help you to quickly identify marijuana plant problems and easily diagnose sick marijuana plants!

Resolve cannabis plant problems

Nutrient problems
Diseases
Pests and bugs
Environmental stresses

Learn more about nutrients, diseases, stresses, pests and bugs.

Click on any picture for detailed information about a particular marijuana problem, deficiency or symptom and find out what’s wrong with your plant.

Let my free marijuana grow bible be your ultimate guide as you begin your marijuana journey.

Nutrient problems

Boron Deficiencies in Marijuana Plants — Boron deficiency

Copper Deficiencies in Marijuana Plants — Boron deficiency

Iron Deficiencies in Marijuana Plants — Iron deficiency

Magnesium Deficiencies in Marijuana Plants — Iron deficiency

Nitrogen Toxicity in Marijuana — Nitrogen toxicity

Molybdenum Deficiencies in Marijuana Plants — Nitrogen toxicity

Phosphorus Deficiencies in Marijuana Plants — Phosphorus deficiency

Potassium Deficiencies in Marijuana Plants — Phosphorus deficiency

Zinc Deficiencies in Marijuana Plants — Zinc deficiency

pH Fluctuations in Marijuana — Zinc deficiency

Diseases

Algae on Marijuana — Algae

Bud rot on Marijuana — Algae

Powdery Mildew on Marijuana — Powdery mildew

Fusarium on Marijuana — Powdery mildew

Root Rot on Marijuana — Root rot

Damping off on Marijauana — Root rot

Pests and bugs

Ants on Marijuana Plants — Ants

Aphids on Marijuana Plants — Ants

Caterpillars on Marijuana Plants — Caterpillars

Cutworms on Marijuana Plants — Caterpillars

Cats and Dogs on Marijuana Plants — Cats and dogs

Deer on Marijuana Plants — Cats and dogs

Gophers and Moles on Marijuana Plants — Gophers and moles

Leaf Miners on Marijuana Plants — Gophers and moles

Rats and Mice on Marijuana Plants — Rats and mice

Snails and Slugs on Marijuana Plants — Rats and mice

Thrips on Marijuana Plants — Thripsy

Whiteflies on Marijuana Plants — Thripsy

Environmental stresses

Marijuana heat stress — Heat stress

Humidity and Temperature in your Marijuana Grow Room — Heat stress

Airy and Loose Cannabis Buds — Airy and loose buds

Cannabis Clones wont Root — Airy and loose buds

Hermaphrodite Cannabis Plants — Hermaphrodites

Marijuana Seeds Wont Germinate — Hermaphrodites

Cannabis Plant Knocked Down — Knocked down plant

Hard or Soft Water for Marijuana Plants — Knocked down plant

Cannabis Soil Problems — Soil problems

Overwatering and Underwatering Cannabis Plants — Soil problems

Robert Bergman

at I Love Growing Marijuana

Robert Bergman is an Amsterdam-based marijuana grow expert who has years of experience from small grows to massive operations. His passion for growing lead him to develop his own Gold Leaf strain. Now, Robert is dedicated to sharing his knowledge with the world.... [Read full bio]

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