Moldy Marijuana: What Do I Do?


There are two words every marijuana user hates to hear: moldy marijuana, aka bud rot. Everyone dreads checking on their plants only to find big, black leaves. Unfortunately, it can happen. That’s why we put together this guide to help you figure out how to prevent bud rot and what to do if it does happen.

What Causes Mold?

You may end up with some moldy marijuana if there was any moisture lock. Moisture lock is the most common cause of bud rot and it usually occurs because the herb is sealed in airtight containers. While this sounds like a good thing, it’s not if there is any moisture in the plant.

More dishonest entrepreneurs will add moisture to add weight to increase profits.

Bud rot.

What Does Mold Look Like?

Mold most commonly is black, dark green, or a stringy grey color. It also has a gross, pungent smell. It will most certainly negatively affect the smell of your flower.

The best way to see mold is by using a blacklight. Under a blacklight, mold is a green color.

Preventative Measures

While you do need 10-15% moisture to keep your plant alive, you also need to keep sufficient airflow. Give your plants a breather and let them dry in a dark, well-ventilated area. If you’re doing jar-curing, air it out every 24-48 hours.

I Already Have Mold. What Do I Do?

If you’re going to smoke moldy marijuana, there is one thing you can do. Turn your oven up to 300 degrees and pop your buds in for 15 minutes. That will kill most common molds.


Jheri is a successful freelance writer and cannabis enthusiast from Michigan. She is currently writing her novel and a number of short stories, as well as promoting cannabis for Smoke Weed and Medical Marijuana Cure. Her office is based in Denver, CO.

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