Tree and shrub injury symptoms in lawns treated with Imprelis herbicide
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Lawn care companies across the country have reported that some trees and shrubs near turf areas treated with a new broadleaf weed killer, Imprelis, showed browning and dieback weeks after the application. Spruce and pine trees have been most severely damaged-some trees dying within 12 weeks of lawn treatment. Damage symptoms also have been observed on many other species of trees and shrubs.
AGW - Emergency Management: Weather-Related Hazards (University of Missouri--Columbia. Extension) ; 2011)
Archive version. For the most recent information see extension.missouri.edu.