I recently had a 20" diameter chinaball tree cut down. They did not have a stump grinder, and I didn't care because I intended to put a planter over the stump. The stump was cut down about 3" above ground level.
Like a cat that won't go away, it started growing again. What is the best way to kill this thing? Drill and put stump killer in the holes? Which stump killer is good and won't kill everything else, or new plants I put near it?
Steve