Lynn from Nothern Alberta, Canada writes
No, Casoron 4G Herbicide cannot be applied to aspargus or any other edibles.
An alternartive recommendation would be Monterey Vegetable and Ornamental Weeder that is labeled for asparagus as a single application.
Per the product label for asparagus, apply after ferns are removed but before spear emergence.
Answer last updated on: 07/22/2022