What are the best chemical to kill tree and shrub roots
Some weedy trees and large shrubs have been cut to the ground, but I do not want to dig and cause soil erosion. I understand that it is best to apply the root killer when the plants are still active, or trying to obsorb nutrients down to the roots.
Also, should I use the concentrated weed killer, or use the regular diluted one? I currently use the Round-up Brsh killer, "ready to use". I do not know yet how effective it is.