Crabgrass control during a hot summer | 農藥合法資訊網

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Crabgrass has been enjoying the high temperatures in Michigan by invading turfgrass areas.

High temperatures and dry conditions in June has crabgrass now appearing in many turf areas. Keep in mind that in contrast to our cool-season turfgrasses that have optimum growing temperatures of about 65-75 degrees Fahrenheit, crabgrass is a warm-season annual that will thrive in the high temperatures of 80-100 F. So as cool-season turf growth has slowed in the last several weeks, crabgrass is now exploding in growth. If post-emergence crabgrass control is in your plans, here’s a herbicide primer. Herbicides will be primarily referred to by their active ingredient.

There are two main options for post-emergence crabgrass control in cool-season turf: quinclorac (Drive XLR8) or fenoxaprop-ethyl (Acclaim Extra). Both products are effective for post-emergence control of crabgrass. However, there are also some key differences between these products (see table):