Tony from Sterling City writes
I need to know how often I should spray young pine trees in order to assure there is always some of the insecticide still there working on any possible bag worms, pine tip moths, etc. ???
Systemic products like the Bonide Systemic Insect Control last for 3-4 months in most cases. In a young growing tree you can apply it that often to make sure the product gets into the new growth.
Answer last updated on: 05/08/2014