Is it too late to put down winterizer on the lawn in southern suburbs ?
Dakota County Minnesota
Do not fertilize at this time.
The reason is that the soil which is freezing on top will not let the nutrients soak in and there is a higher risk of runoff into surface water.
Furthermore, the grass is going dormant-fertilizer should work with plant cycles. https://extension.umn.edu/planting-and-growing-guides/lawn-care-calendar
I hope this helps.
Thank you for writing