Biofeed 90003-02 ARBOR-PLUS® 6-2-3 Shrub and Tree Fertilizer 2-1/2 gal - ARBOR-PLUS® tree and shrub fertilizer provides a balanced blend of primary and micro-nutrients. These promote quicker healing, deep root growth, plus stronger vertical and horizontal growth of trees and shrubs. In the soil, ARBOR-PLUS® naturally oxygenates the root zone to reduce disease-causing anaerobic bacteria that can destroy roots. Its trace nutrients are organically complexed for rapid uptake by hungry roots to develop deep green leaf color, while it supplies essential nutrients commonly lost due to leaching. ARBOR-PLUS® is a concentrated liquid that should be diluted in water for quick and easy application as a root feed solution, soil drench, or foliar spray application.