Roy from Redding, Ca writes
Empero Q-Pak Herbicide is a post emergent to treat actively growing weeds. Typically, post emergents are best applied when temperatures are between 65 and 85 degrees. For the most accurate timing to treat specific weeds in your area, we recommend contacting the Master Gardener with the County Cooperative Extension Office for their recommendation.
Answer last updated on: 02/24/2021