A new herbicide marketed as Imprelis, manufactured by DuPont, has been responsible for the apparent death of thousands of Norway spruces and eastern white pines, among others.  The broadleaf weed killer was approved by the EPA in October, 2010 and was used by a number of landscape companies last spring.

            Almost immediately after widespread use, trees started to show signs of trouble that include browning and twisting of new growth.  Trees with similar damage from chemical damage have survived in the long run.  Michigan State University is recommending a “wait and see” attitude for tree owners on its website http://news.msue.msu.edu/news/article/what_to_do_with_imprelis_affected_trees.

            DuPont advises against fertilizing trees impacted by Imprelis.  If your tree has been affected, you may be entitled to make a claim.  You can call the hotline that DuPont has set up at 866 796-4783.  The company originally set up a deadline for listing properties with trees damaged by Imprelis of November 30, 2011, but has set a second deadline of February 1, 2012 for Lawn Care Professionals and Golf Course Superintendents.  If you suspect that your tree was treated by your landscape company, you need to contact them immediately.

            For more information, visit the following DuPont websites: http://www.imprelis-facts.com/      https://treedamageinfo.com/index.html