What can happen if turfgrass is mowed shortly after herbicide application?

Mowing turfgrass shortly after the application of herbicides can indeed damage the turfgrass. This is primarily due to the disruption of the plant's ability to absorb and utilize the chemical effectively. When herbicides are applied, the turfgrass needs time to uptake the active ingredients, allowing the herbicide to perform its function in suppressing or controlling unwanted weeds. If mowing occurs too soon, it can remove the top growth where the herbicide has been absorbed, effectively reducing its efficacy and potentially leading to an incomplete or uneven kill of the targeted weeds.

Additionally, mowing can create physical stress on the turfgrass, particularly if it is already under stress from the herbicide application. This stress can result in poor health and vigor, leading to long-term issues with the turf's appearance and resilience. The timing of mowing after herbicide application is critical for the herbicide to be effective and for the health of the turf. In general, it is advisable to wait at least a few days after application before mowing, ensuring optimal treatment and protecting the grass condition.