What’s worse than a cannabis plant that produces pitiful weed? Easy, a plant that produces world-class weed, only to succumb to mould and deteriorate before your eyes.

In the world of cannabis cultivation, there’s really nothing more disheartening than watching your hard work and effort rot. Unfortunately, it’s a surprisingly common scenario. You think you’ve done everything right, only for your plants to be devoured by mould.

Mould is one of the most common causes of cannabis plant death and destruction. The problem being that by the time you’ve detected it, there’s probably very little you can do about it.

On the plus side, it’s actually quite easy to prevent mould from setting in in the first place. All you need to do is follow a few basic rules, as outlined below:

1. Space to Breathe
First and foremost, you need to ensure that your cannabis plants have sufficient space to breathe in the first place. Stagnant air and excessive moisture are the two biggest causes of mould development - both of which are exacerbated by congestion in the grow space. It’s important to ensure that each of your cannabis plants has plenty of room to grow, without getting too ‘cosy’ with the other plants in the vicinity. If your plants are squashed together and pressed up against one another, you’re far more likely to encounter issues with mould.

2. Keep it Trim
It’s also the same with plants that are particularly dense and bushy, which can be their own worst enemies. If a plant’s foliage reaches a point where fresh air cannot reach all areas of the plant, you need to think about giving it a trim. Not to such an extent as to compromise its health and strength, but simply to ensure fresh air gets where it needs to be. Some specimens are naturally stouter and denser than other, so choose your seeds carefully and space your seedlings accordingly.

3. Monitor Temperatures
You’ll also want to ensure you keep your grow space at the ideal temperature, in accordance with the strain of cannabis you’re growing and its current life cycle stage. Cannabis plants have very different temperature requirements as they grow and flower, so you’ll need to pay close attention to your plants’ requirements accordingly. In addition, it’s also important to avoid sudden and dramatic changes in temperature, which can lead to condensation and excessive moisture buildup.

4. Measure Humidity
Speaking of moisture, mould thrives when humidity levels creep above 50%.Depending on what you’re growing and its requirements at the time, you may need to keep humidity levels in your grow space relatively high. However, it’s important to note that the higher the humidity level, the more likely your plants are to succumb to mould and mildew. Ensure you invest in a good humidity monitor and keep a close eye on it at all times.

5. Circulate Fresh Air
Last but not least, there’s no more effective way of preventing mould in an indoor grow space than by ensuring sufficient circulation of fresh air.Sometimes, simply installing a couple of oscillating desk fans is all it takes. If you have a larger and more demanding grow space, you may need to think about more advanced extraction and ventilation systems. The circulation of fresh air makes it much more difficult for mould to set in, or to spread across your grow space if already an issue.

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