Matt from Orange, Tx writes
How long it takes for Prime Source Imidacloprid 2F to translocate through a tree from the roots to the leaves will depend on the size of the tree, growth stage, and the rate at which the product was applied. This could be only a few days for very small plants to several weeks for larger trees. For some plants, this may take 60 days or longer, so the product is best applied before anticipated pest infestations, per the product label.
Answer last updated on: 03/06/2018
