I've done some digging and I think it's a fungus and I need fungicide and to keep a window open. Anyone have any experience of this on a pilea?
The roots are fine, it's currently in fairly dry soil with good drainage. I've got it in a very organic mix that is quite loose. I've been learning about overwatering having killed a few plants, but now this one's being watered more sparingly, letting the water run out the bottom, making sure it doesn't sit in it.
by TheLanguageArtist