You can put the mix of soil and mold into your compost bin or even directly into the garden. Simply take a small tool-fork, mini-rake, etc.-and carefully scrape off the upper surface of sowing mix. Scrape off the mold and top layer of soil and replace with fresh soil. However, some types form a network of mycelium so dense that it impedes air and water circulation. OK, so white mold in seedling soil is normal and even beneficial to a certain degree, but you still probably don’t want it. That’s because, as it decomposes the organic matter, it frees up minerals your young plants can use for their growth. In fact, it actually helps your seedlings to a certain degree. It isn’t pathogenic or directly harmful your plants. It lives by decomposing particles of organic matter (wood, peat, leaf mold, coconut fiber, paper, etc.) found in the potting mix. This mold is a type of saprophytic fungus. And when they find an environment they like, they start to develop. (But don’t use garden soil for seed sowing!) They’re pretty much everywhere. There are certainly some in any garden soil you brought indoors. And spores may be present in the potting soil you buy. Their spores float around in the air both indoors and out and germinate when they find a substrate that suits them. Such fungi are ever-present in our environment. This kind of mold is a type of filamentous fungus. Am I going to lose them? Should I destroy them to prevent the mold from spreading to my other trays? This is the first time I’ve tried sowing seeds and I’m so disappointed!Īnswer: I hope you haven’t done anything drastic, as white mold in seedling trays is just a minor problem and so easily fixed. Question: I was horrified to discover white mold growing in the soil of two trays of seedlings. White mold in the soil of your seedling tray can be a cause of panic, but is actually harmless and even quite normal.
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