Chris from Bowling Green, Ky writes
Roundup QuikPRO can kill weeds only when they are actively growing and healthy. Generally this is when temperatures are above 55 degrees but it depends on the specific weed(s) you are targeting. If target weeds are still green and thriving even in colder temperatures, Roundup QuikPRO will still kill them.
Answer last updated on: 01/07/2019