Mowing before using round up on weeds - Ask Extension
I’m doing a really big job with round up and I have some really tall weeds to deal with. Should I cut the weed down before I spray it?
Knowledgebase
Mowing before using round up on weeds #909194
Asked July 10, 2025, 9:21 AM EDT
I’m doing a really big job with round up and I have some really tall weeds to deal with. Should I cut the weed down before I spray it?
Larimer County Colorado
Expert Response
Hi there,
It's actually best to have as much surface area when you apply the herbicides. Also, try to ensure the plants are actively growing, so keep watering. I realize this sounds counterproductive, but they will absorb the herbicides better.
It's actually best to have as much surface area when you apply the herbicides. Also, try to ensure the plants are actively growing, so keep watering. I realize this sounds counterproductive, but they will absorb the herbicides better.
