I have a holly bush that is very large, and in December I noticed that it was coming up out of the ground at the roots on the back side and falling forward. I straightened it up and put more soil around it and tied it with rope secured to the deck, which is behind it. Recently, I untied it and sure enough it fell over again. I am trimming it down and will try to replant it. Any further suggestions or ideas as to why this happened? I appreciate your thoughts.
Certified GKH Gardening Expert
The first thing that came to mind was frost heave. Here is an article that discusses frost heave and how to protect your plants from it: