Sissy from Camden, Sc writes
Tordon RTU Specialty Herbicide is not specifically labeled to control cacti, but some articles recommend this active ingredient to aid in control. One very difficult part of controlling this plant is that all debris must be removed from the area to prevent resprouting. Unfortunately, we do not have any herbicides currently labeled to control cactus other than Remedy Ultra Herbicide, which lists Prickly Pear Cactus specifically. This Field Guide from the USDA discusses control methods for Prickly Pear Cactus. Another active ingredient mentioned is Fluroxypyr, which we do have in the product E-2 Herbicide. We recommend consulting your local Cooperative Extension office for assistance. Since this is a heavily invasive species of importance, most local office will want to know where the plant is being found.
Answer last updated on: 07/17/2018