Tree-age G4 Systemic Insecticide - TreeStuff.com Tree-age G4 a systemic, injectable insecticide that provides two-year control of many insect and mite pests in deciduous, coniferous, and palm trees. The active ingredient - Emamectin Benzoate - kills existing pest populations and provides lasting protection from new infestations. Sold in a 1 quart bottle $464.99 oversized shipping rates apply