John from Kennett Square, Pa writes
Pendulum AquaCap Herbicide 2.5 Gallon is labeled for smartweek as is Weed Impede which is a lower cost alternative that can be used around certain established ornamental plantings as listed on the label. We apologize but are not aware of a pre emergent for Japanese stiltgrass. Most university studies recommend a product containing the active ingredient of Pendimethalin which is what Pendulum contains but since not specifically labeled for it we cannot recommend it. Acclaim Extra is a selective post-emergence herbicide that controls annual and perennial grasses around ornamentals listed on the label.
Answer last updated on: 02/01/2019