![Is this fungus? I topped my potted plants with worm castings and it is turning white, grey, and brownish colors. Should I scrape it off? : r/gardening Is this fungus? I topped my potted plants with worm castings and it is turning white, grey, and brownish colors. Should I scrape it off? : r/gardening](https://i.redd.it/7dpmft9ln0q31.jpg)
Is this fungus? I topped my potted plants with worm castings and it is turning white, grey, and brownish colors. Should I scrape it off? : r/gardening
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