For Autumn Olive, it is recommended that after cutting large bushes, it is best to immediately apply a glyphosate herbicide or Fertilome Brush Killer. If new shoots appear later, spray them to kill them. The most successful method is to remove the autumn olive bush, roots and all.
Tordon RTU Herbicide is labeled to treat Ailanthus stumps. For stump treatment, it is recommended to spray or paint the cut surfaces of freshly cut stumps and stubs with undiluted Tordon RTU. Please follow all label instructions.
Fertilome Brush Killer and Stump Killer is labeled to kill vines, but not wisteria specifically. So it very well could work if you have it cut back, and spray it on the remaining roots however, we could not guarantee that it would work 100%.
Fertilome Brush Killer and Stump Killer is labeled to kill Wild Grape. The product is labeled to kill other plants as well so precaution must be taken if you have desirable plants around the wild grape. Please refer to and follow all the label instructions.
It is best to apply the Fertilome Brush Killer and Stump Killer to a freshly cut stump to get the best results, so it would be good to cut the stump down before using.
Fertilome Brush Killer and Stump Killer can be used to kill the stump of a magnolia or other tree. Apply the product at full strength to the fresh cut stump. See the product label for complete application instructions.