Very old lilac
I have a very old lilac in my front yard and I was just wondering if there is anything I can do to help it stay as healthy as possible. The house is 100 years old and this lilac is more like a tree then a bush.
I had noticed it would wiggle when I pushed (not hard) on it. upon further investigation I found that the trunk has been hollowed out and now there are a number of "pill bugs" running around down there. there are also round holes in the trunk made by some kind of bug...
The bush/tree seems happy enough, healthy leaves, blooms and sends up sappers (which I cilp off). I've been giving it ground up eggshells.
Anything else it might want to stay strong? It is a lovely member of my yard and I want to make sure it's getting everything it might need.
Thanks! - Rudy