Systemic Injections

How does this type of treatment work exactly?

Forest Trees
What are the Benefits of Systemic Injection of Trees?

The characteristics listed below make trunk injections the best approach for insect control for trees near waterways, pools, campuses, and public areas. Since universities and hospitals usually do not close, systemic trunk injections keep the public safe.

Chemical Trapped in Tree
Injected insect control product stays in the tree.

Environmentally Safe
Product containment minimizes exposure to soil, water, and air.

Limited Exposure
Product containment minimizes public and applicator exposure.

Better Efficacy 
Injected control products are more effective, with no photo or microbial degradation.

Targeted Control
Systemic injections only kill the insects feeding on treated trees.

Wider Treatment Windows
Injected formulations control tree pests for up to two years, expanding the window of treatment.


The Systemic Injection Process
A tree company, well versed in tree injection treatment, will take the following steps to ensure a good result. 

Measure & Identification – The first step is for an arborist to identify what insect is attacking the tree. Next is measuring the tree. Tree size determines the number of injection sites and the amount of product needed to control the problem. 

Drill – Drill holes into the bottom 18 inches of the tree. Buttress roots or root flares are ideal locations. Sterilize drill bits between applications. 


Plugs – Plastic oneway ports trap the control products inside the tree, so no chemicals drip into the surrounding environment. The use of plugs reduces the chance of vector disease contamination. In time, the tree heals, covering the plug wounds. 


Inject – The control product is either injected with or without pressure. The approach depends on the size of the tree. Large trees require pressurized treatments injected into multiple holes evenly distributed around the tree. 


Watering – After the injection process is complete, the tree needs watering. The water moves the control product up the Xylem, setting the trees up for success. 
Tree and Site Considerations 

The systemic insecticide may come as a dry powder or a liquid. Both are mixed with water to form the right concentration based on tree size. The best results for systemic treatments occur when the trees are:


Actively Growing – Growing trees take up water and move injected control compounds better. We recommend fall applications only when leaves are still on the trees.


Healthy – Hardy trees take up control products more actively. Treating stressed or diseased trees is less effective. 


Non-saturated Soils – If the trees are not thirsty, the roots do not transport the control product.


Dry Soils – The lack of water hinders the vascular system’s ability to distribute the control product.


Apply During a Sunny, Warm Week – After application, warm weather forces the tree to expire water triggering the root system and vascular system to transport the product throughout the tree.


Frozen Ground – Treating trees after the ground freezes is a waste of time and money.