Cannabis Grow Room Cleaning and Maintenance Checklist

Common examples of IPM include:

• Soapy water against aphids

• Ladybug larvae against mites

• Crimson clover cover crop against fungal diseases and parasitic nematodes

• Neem oil as a natural pesticide

Throw it away:

• To completely avoid exposing the next cycle of plants to the same pests and diseases, many growers throw their soil away. If you struggled with fungus gnats, parasitic nematodes, or other soil-dwelling pests or diseases, discard your soil and start anew.

Reuse it:

• If you made it through the last grow with no pest issues, you can reuse your soil. You’ll need to add some organic matter, such as compost, green manure, or worm castings, to replace some of the nutrients and feed the beneficial microbes. Let the life in the soil break down this good stuff over 2–3 weeks before transplanting into your amended medium.

Clean infected soil:

• If, for whatever reason, you can’t access new soil, but your plants suffered from a disease or pest infestation, you can attempt to clean your old growing medium. You can pasteurise your old soil in the sun to kill off bad microbes, or saturate it with enzymes that speed up the decomposition of decaying organic matter.