Steve from Milton, Fl writes
I have a slew of various weeds in my lawn which consists mostly of Centipede grass but has some St. Augustine. I live in the Florida panhandle. Lawn weed killers sold at big box stores seem to have little effect and are cost prohibitive for large areas such as a 100' x 150' lawn. What active weed killer(s) and/or pre-emergent herbicides would you recommend? And, in the case of pre-emergent herbicides, when should they be applied? The list of weeds controlled by your Snapshot product seems to cover the gamut, but I cannot see where it can be used on Centipede/St. Augustine lawns. Thanks.
SnapShot 2.5 TG is not labeled to be used on lawns at all and would not be recommended. Dimension 2EW is our most popular pre-emergent herbicide for both grassy and broadleaf weeds and can be used on both St. Augustine and Centipede lawns. For Southern zones like FL, you would do a fall application by Oct 1st and for spring you would do a second application between February and March 15th at the latest. Re-applications and timing will depend specifically on what program you choose to use. Please review page 4 of the product label to determine the program that will best suit your needs. Tenacity or Atrazine would be good post emergent herbicides for your lawn type.
Answer last updated on: 08/18/2015
