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Spots on leaves
Bud Rot
by Nebula Haze
How to Prevent & Stop Bud Rot (quick summary)
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Air circulation - Make sure there’s always plenty of air moving over all the buds and leaves, and through the plant. This can take careful planning.
Root Problems
by Nebula Haze
Table of Contents
Root Problem Symptoms (many different symptoms)
Cannabis Plants With Root Problems Show Many Symptoms
Pictures of marijuana symptoms caused by over-watering, too much heat, and small containers
by Nebula Haze
Here's a series of pictures of a couple marijuana clones I had a few years ago.
I was experimenting with growing an entire plant from clone to harvest in a solo cup, which is why you can see flowering plants in such small containers. Each of these were flowered as soon as the clones took root. This technique is often called "Flowering from seed" or "12-12 from seed" and just means that you force the plant to start flowering at a very young age. I wanted to see how small I could get flowering plants.
Spider Mites
Spider mites (sometimes called spidermites) are part of the mite family and are related to ticks and other mites. They're a common cannabis pest, and can be hard to get rid of.
First Sign of Spider Mite Damage - Tiny Specks (Bite Marks) On Leaves