Hi,
I noticed a white powdery mildew on the trunk of my chinese juniper.
I thought it was only from water but it seems to be spreading up the trunk
Any idea what that is and how to get rid of it?
The picture is very small. It looks like there is moss on the soil. If so, you should take it off. Moss will keep the soil wet. wet soil invites mold and other things that aren't good for bonsai trees