Thursday, April 5, 2012

When to Spray Your Ash Trees for EAB

Emerald Ash Borer (EAB) is one nasty bug that has killed millions of ash trees across the United States.  It came here from Asia and the Ash trees have no natural defense to ward off these bugs.  If you live in an infested area, you need to protect your trees BEFORE they become infested.  


The spring is the best time to contact an arborist to correctly identify your trees and apply the EAB treatment if necessary.  Insecticides applied in the spring will probably work best on trees with little or no borer damage. We do not yet know if trees already damaged by borers will benefit from insecticide treatments, or at what point trees are too damaged to recover. It is unlikely that systemic insecticides applied as trunk injections, soil drenches, or soil injections will move very well in trees with extensive tunneling injury. Trees with more than 20% canopy die-back usually have extensive damage that will be difficult to overcome, even if the trees are protected from further attack by trunk and foliage sprays. 


Trees "R" Us, Inc. recommends any of the following to try to ward off the EAB: (1) trunk injections in the spring, (2) soil injections in spring, and (3) trunk and foliage sprays in spring and early summer.


If you hire an arborist they should be considering one of the treatments listed above. Arborists and landscapers usually do a much better job of treating trees (especially large trees) with insecticide than homeowners do, and homeowners cannot make trunk injections of the most effective products, imidacloprid and bidrin, on their own. However, if a homeowner prefers to make insecticide treatments themselves, they can purchase other pesticides at local garden centers, however they won't be as effective as what the pros use.  By law, homeowners can not handle the more effective chemicals.  A special license is needed in order to apply these. 


Trees "R" Us, Inc. has personnel that is licensed and highly qualified to treat EAB and apply the most effective insecticide treatments on the market.  These treatments will only effect the infected tree while keeping your other plants, animals and family safe.


For something as serious as EAB is for your trees, leave it to a professional tree service, like Trees "R" Us, Inc. to get the job done safely and correctly.


Trees "R" Us, Inc. services the north shore area of Chicago and its surrounding suburbs.


Thanks for Reading,
Nick
nick@treesrusinc.com

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