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Anti-fungal Cinnamon for Plants

This is our first year trying to grow pepper plants. We are using a different type of soil, but have also noticed that some mildew has formed on the surface of our seed tray. Some adventures online have suggested that sprinkling cinnamon on top will act as an anti-fungal and fix our problem. So, let’s give it a try!

Just regular cinnamon sprinkled on top of the soil.

March 16, 2022

Sprinkled cinnamon on the soil and watered just as frequently as other soil.

March 23, 2022

No fungal growth from what we can see, but the seeds haven’t germinated either. It may not have been warm enough for this to happen. Other seed containers that did not contain cinnamon had fungal growth. One even had little yellow mushrooms! So perhaps the cinnamon really works?

onions with yellow mushrooms
Fertilizer pellets? Nope, those are yellow mushrooms. Apparently they are harmless but I still picked them out.

We will update this post in the future to see if anything else happens with the soil. For now, it seems to be doing the trick!

April 2/22 Update

The cinnamon trick totally works! My sunroom was not warm enough at the time for the jalapeno seeds to germinated, but now they have. As for the yellow mushrooms, I did not use cinnamon on them but have been manually picking them out of the soil with a pen lid. Seems to be working just fine and the onions are doing fabulously.

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