Mark from Cardiff, Ca writes
root system not very accessible
Fertilome Tree and Shrub Systemic Insect Drench is labeled only for application directly to the root system of ornamental trees and shrubs. This active ingredient (imidacloprid) will not absorb through the bark of the tree. If you need to do a bark spray instead, then we recommend Safari 20SG instead.
Answer last updated on: 10/18/2019