The Best Time to Apply a Pre-Emergent Crabgrass Preventative in Wisconsin

The best time to apply a pre-emergent crabgrass herbicide in Wisconsin is in the spring, according to the University of Wisconsin Extension. In late summer and early autumn, note where crabgrass is a problem--then spot-treat those areas in the spring before the soil temperature reaches 60 degrees F.

Keywords: treating crabgrass, Wisconsin lawns, herbicides for crabgrass

About this Author

Aileen Clarkson has been an award-winning editor and reporter for more than 20 years, earning three awards from the Society of Professional Journalists. She has worked for several newspapers, including "The Washington Post" and "The Charlotte Observer." Clarkson earned a Bachelor of Arts in journalism from the University of Florida.