Imprelis Herbicide Injury: 2011 PPDL Host List
Gail Ruhl, Sr. Plant Disease Diagnostician, Purdue University
We have received questions pertaining to susceptibility of plants to Imprelis. We do not have a list of "susceptible vs. not susceptible" plants because we do not know exactly which plants might be affected under certain growing conditions. However, based on our experience in the PPDL this past summer the list below contains the names of plants on which we saw symptoms of herbicide injury when Imprelis was reported to have been applied on the property. There is no certainty that all of the damage observed on these plants listed below was actually caused by Imprelis. Confirmation of Imprelis injury will depend on the residue analysis and final reports provided by the Office of Indiana State Chemist (OISC). An asterisk (*) next to the plants listed below indicates that Imprelis residue was confirmed in host tissue by the OISC. In a few cases we also saw herbicide injury symptoms on annuals (tomato) and perennials but those have been omitted from this list.
For more information on the Imprelis situation, please see our previous article.
Bird’s nest Spruce*
Colorado blue spruce*
Eastern white pine
Deciduous trees or shrubs
Rose of Sharon