Abstract: A system for administering a fluid to a tree. The fluid can be water, coloring agents, insecticides, fungicides, nutrients, plant growth regulators and herbicides. The system also includes a pressurizable container containing the fluid and a low pressure gas. The pressurizable container is attached to a manifold. Additionally, an infusion nozzle is attached to the manifold and configured to provide attachment of the system to a tree for an extended period of time ranging from weeks to months. The system also can, optionally, include an infusion control valve configured to regulate the flow of fluid from the container, through the manifold, through the infusion nozzle and into the tree. The infusion nozzle has threads that provide direct attachment to the tree.