Shaun from Salisbury, Nc writes
I really need a post-emergent herbicide for use under some oak trees on typical lawn weeds (dandelion and clover etc...). My lot is small and the tree drip lines extend past my lawn (my whole lawn is under the massive tree canopies). So anything I use is going to be near surface roots. I've seen a neighbor knock the leaves out of his trees one year with Speedzone. That is a scary thought considering the cost of removing a tall oak tree.
Tenacity Herbicide states on the product label: Avoid applications over the top of exposed roots of trees and ornamentals. Just about all herbicides are going to have the restriction that applications should be kept out of the dripline of desirable trees. The best you could do is carefully spot treat the weeds themselves and not broadcast in these areas.
Answer last updated on: 05/20/2019
