I was just checking one of my junipers soil and noticed that some of the moss on the soil is starting to go yellow, so I touched the moss to see how dry it is, and felt it was a little loose, not really connected to the soil underneath, so I lifted up some of the moss and found all this little white worms. I checked deeper in the soil and found some more, but the bulk of them were under the moss. The soil is pretty moist. I just read that it could be a sign of over-watering. Is there anything else I can do to make sure my tree doesn't become worm lunch??