Mike from Bettendorf, Ia writes
Ferti-lome Tree and Shrub Systemic Insect Drench can be applied anytime during the year as long as the ground is not frozen or waterlogged. On smaller trees and shrubs, most folks will apply a systemic product such as Ferti-lome Tree and Shrub Systemic Insect Drench in the spring and after petal fall on flowering plants. If you have very large trees, then you could apply in the fall so that the insecticide moves through the plant quickly in the spring with new growth.
Answer last updated on: 10/08/2021
