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.
Alison O'Connor, PhD Replied July 10, 2025, 6:53 PM EDT

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