Jarrod from Prairieville, Louisiana writes
Tenacity is not usually applied in December since it is most often applied to cool season turfgrasses, and it would be too cold in December to use herbicides in most areas with these turfgrasses. Whether Tenacity will work for your needs will depend on the type of desirable turfgrass you have and what specific weeds you are targeting. Tenacity is not safe to use on St. Augustine, zoysia, or Bermuda grass lawns.
Tenacity is usually applied as a pre-emergent in the fall or spring before overseeding with cool season grass such as rye or fescue. As a post-emergent, you would only spot treat with Tenacity as directed on the product label since this product can cause temporary whitening on desirable turfgrass.
Answer last updated on: 12/14/2021
