Laura from Sioux Falls Sd writes
Hi-Yield Grass Killer Postemergence Herbicide does not specifically list fern peonies, tree peonies and other herbaceous peonies on the product label as tolerable to this product. Please tell us more about what you are treating for so that we are able to locate a product that will best fit your needs. We can also be reached at 866-581-7378 M-F 9-5PM EST.
Answer last updated on: 05/03/2015