Emerald Ash Borer


You CAN protect your trees from Emerald Ash Borer and the harmful Lilac Ash Borer by scheduling one of our preventative injection or spray treatment programs today by calling 970.223.4772 or by email.


Eco Friendly Injections


Unlike spraying or soil applications, a trunk injection system injects directly into the tree, limiting any impact to your family, the applicator, and the environment around you.


Why use Trunk Injection over traditional spray methods?


Trunk injection is the most effective alternative to spraying or soil applied pesticides for tree insect or pest control.  Trunk injection equipment injects formulations directly into the trunk where it is quickly taken up by the vascular system and distributed throughout the tree.  Formulations are sealed inside the tree through the use of an arbor plug to achieve fast and effective results.  And some formulations have a residual for up to two years.  


With over 10 years of research and development, trunk injection systems and formulations are proven to give the best results when protecting trees from pests such as the Emerald Ash Borer.



Please keep in mind, once your trees show symptoms of infestation

(as indicated in the photos below) the borers have most likely been present in your tree for a number of years. Thinning of tree canopy is an early sign of infestation.




























Colorado State University, http://bspm.agsci.colostate.edu/files/2014/02/EAB-control-options-February-11.pdf (last accessed Mar. 13, 2014).


EAB tunnel under the bark, preventing water and other nutrients

from getting to different parts of the tree. The beetle flies as an adult and generally goes a short distance, but can travel miles with favorable winds and other conditions. Humans can unknowingly transport the borer through firewood or the moving of live ash trees.

















Colorado State Forest Service (last accessed Mar. 13, 2014).


In September of 2013, EAB was first identified in Boulder, and was diagnosed in the city of Longmont in 2016. Collaborative efforts by local and state agencies have put together a quarantine to slow the migration of this fatal pest. All Northern Colorado residents should be aware of the danger these borers can present to their ash trees and should take IMMEDIATE action to implement preventative treatment programs. Once infected by EAB, a tree cannot be saved and it may take a couple of years before symptoms begin to show.

























To register for a preventative injection or spray treatment program today, please contact HLS Colorado (dba Hill’s Landscape Service) by calling us at 970-223-4772 or by email.