Heinz from Canada writes
SureGuard Herbicide is not for use around any edible crops and must be applied very carefully around non bearing trees to not harm them. We are not able to advise on what level of damage could potentially occur to the pear trees if treated. We would recommend speaking to someone at the manufacturer of the product to see if they have any advice they can give to help save the tree. You can reach Valent at 800-682-5368.
Answer last updated on: 04/23/2021