I have a houseplant that is developing reddish brown deposits on the soil. Are these molds or some type of mineral deposits from the water? If they are mold, are they dangerous? Thanks for your assistance.
Certified GKH Gardening Expert
It could be either, but regardless, they are not dangerous to you or your plant. They may indicate though that you are keeping the soil a bit too damp. Make sure the plant is not being overwatered and that the drainage is good.