Steve from Birmingham Alabama writes
It is important to apply pre-emergents like Gallery 75 DF Specialty Herbicide just before the soil reaches 55+ degrees, right before the seeds begin to germinate in the soil. For warm season grasses, this is typically around February-March. You may contact your county extension office for the specific time frame to apply in your county and also visit our Lawn Care Schedule Guide for more information.
Answer last updated on: 02/05/2018