Trunk injection is an advanced tree health treatment that works from the inside out, using the tree’s natural circulation system to distribute nutrients or protective treatments where they are needed most. This approach is commonly used to correct iron deficiencies, manage insect infestations, and protect shade trees and palms from regional pests. Because the treatment is contained within the tree, it reduces runoff and exposure to surrounding plants and soil. ArborJet injections are a proven, environmentally responsible option for maintaining long-term tree health.