I don't see too many questions on this forum regarding trees and shrubs but here goes anyway.
I have a tree (unknown variety) on my boulevard that is approximately 25 yrs old. Every year I get these suckers growing up from the tree roots through the grass on my lawn. I have tried hand clipping them close to the ground but they just grow back. In order to keep them from getting any bigger I usually cut the tops off the suckers with the lawnmower.
Does anybody know of a safe way of getting rid of the suckers permanently without damaging the tree?