Cannabis Plant Infirmary

Welcome to Percys Grow Rooms Cannabis Plant Infirmary. Here, you can find guides on diagnosing, treating, and preventing many cannabis plant problems.

Whether you have a hungry plant, are bugs have invaded your grow room, you will find a grow guide here to help you fix the problem.

The important thing to remember when treating a sick cannabis plant, is proper diagnosis. If you need help diagnosing what is wrong with your plants, then enter a post into the infirmary section of the forum.


Here is a list of common cannabis plant deficiencies. Each picture here is downloadable, and printable for future reference.
Click on any image to go to a full guide on diagnosing and treating a cannabis plant deficiency.

Excess and Toxicity

When you overfeed a cannabis plant, it can suffer with excess and toxicity. It is always better to under feed a cannabis plant, than over feed one.
If you think your plants are suffering with nutrient excess, then here are some guides to help you fix the problem, and prevent it from happening again

Help with a Sick Plant
Last Post Info

Grow Information Form

Get help with your sick cannabis plant! The more information you can provide the better! Help us diagnose your sick cannabis plant quickly, and accurately, by filling out this form.

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Cannabis Plant Diagnosis


Help with a Sick Plant

If you need help diagnosing a sick cannabis plant, then post in here. Fill out the "Grow Information Form" and paste it into this section as a new topic. We will soon get your plant back to full health.

Common Causes of Plant Problems

Identifying and Treating Bugs on Cannabis Plants

There are many bugs that will try to eat your cannabis plant. The key to treating any bug infestation is correct diagnosis and treatment.
Clean the grow area, clean the plants, and find out how the bugs got to them. Then find out how to treat the bugs here

Pesticides for Killing Bugs on a Cannabis Plant