In the wake of complaints about twisting and curling of new growth in Norway spruce, white pine and other evergreens, DuPont has asked users of the herbicide Imprelis not to apply the product on or near these tree species.
DuPont is currently conducting an investigation to determine the exact circumstances under which the tree damage occurred. The company says that most of the cases involve white pine or Norway spruce, that Imprelis was not applied alone but in a mixture with other pre- or post-emergent herbicdes, and that errors may have occurred involving use rates, mixing practices or applications to exposed roots or to the tree itself.
The company also cautions users "to be careful that no spray treatment, drift or runoff occurs that could make contact with trees, shrubs and other desirable plants, and stay well away from exposed roots and the root zone of trees and shrubs."
For more information from DuPont, go to http://www2.dupont.com/Professional_Products/en_US/Products_and_Services/Imprelis/index.html or send questions to proproducts@usa.dupont.com.
We just got a call from our lawn Care Service this week telling us that the Du pont chemical has caused damage to our Blue Spruce pines that are 13 years old and quite mature. We have also had some small pine trees killed as well. I'm now concerned about the grass as well, it does not look very good.
Posted by: Joe | June 30, 2011 at 09:06 AM