For professionals: Avoid late summer weed control – Turfgrass Science at Purdue University

For professionals: Avoid late summer weed control

Though this summer has been pretty kind for our cool-season grasses, a number of weeds may be at high enough populations to become problematic. With temperatures forecast in the high 80’s or 90’s for the next week, it is probably best to leave the herbicides locked in storage. Plus most of the problematic weeds (crabgrass, yellow nutsedge, summer annual broadleaves) will be losing their vigor as they near the end are nearing the end of their lifecycle in the next couple of weeks. We often get questions about if control is attempted now, will it reduce the seed source in the soil? The answer is likely “yes” but there are so many viable seeds in the soil already that it won’t make a significant difference in next year’s weed pressure.  If you absolutely must treat, try to schedule it for the coolest, most overcast day in the forecast, insure damp soil and healthy turf, and avoid tankmixes with other herbicides and/or nitrogen that could increase the burn potential.

 Categories:

Share This Article
Disclaimer: Reference to products is not intended to be an endorsement to the exclusion of others which may have similar uses. Any person using products listed in these articles assumes full responsibility for their use in accordance with current directions of the manufacturer.
Turfgrass Science at Purdue University - Horticulture & Landscape Architecture, 625 Agriculture Mall, West Lafayette, IN 47907

© 2024 Purdue University | An equal access/equal opportunity university | Copyright Complaints | Maintained by Turfgrass Science at Purdue University

If you have trouble accessing this page because of a disability, please contact Turfgrass Science at Purdue University at ashbreed@purdue.edu | Accessibility Resources