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cannabis plant pests

Cannabis plant pests

Spider Mites
Spider mites are often caught from another grow room, and their bites leave small white speckles all over your leaves. They’re so small they can be hard to see, though the best place to look is underneath leaves. You may see webbing if there’s enough of them living on the plant.

Tobacco Mosaic Virus
It’s not known whether mosaic virus has jumped from tobacco to cannabis plants, but in this article I’ll share what I’ve learned so far…
Unfortunately, bugs and other garden pests can totally mess up your marijuana harvest!

Leaf Miners
Leaf miners are larva that actually live inside your leaves and tunnel through them to eat!
Barnacles / Scale Insects
These bugs that look like barnacles and stick to the plant on stems and underneath leaves
Thrips
​ Thrips leave irregular bronze or silver marks that may look like “dried spit” or tiny snail trails. Their young look like fat, tiny worms.
This page aims to be a comprehensive resource on the different types of bugs / pests / mold that can affect your marijuana crop, along with tips for preventing and solving each problem.
Quick Tip! Whenever you spray plants with anything, make sure to get the undersides of the leaves too, as this is where many pests like to hang out! A one-hand pressure sprayer / mister is also really helpful for spraying leaves.

Bud Rot or Mold
When bud rot strikes, certain buds may start looking sickly overnight, with leaves turning yellow and/or bud becoming discolored. When opened up the inside of the bud is dead or moldy.

This easy picture guide will help you quickly diagnose your sick plants. Learn how to get rid of the most common marijuana pests!