How to treat crabgrass

Asked March 4, 2016, 7:28 AM EST

My community has asked me to educate them on the best way to treat crabgrass. Many people treat it at this time of year with chemicals and I would like to provide them alternatives or the least harmful way to treat it. Is there a MG standard recommendation for treating crabgrass?
I have been told that corn gluten can be applied three times as a pre-emergent and is considered safe for the environment but there may be more effective and attractive options.
Thank you.

Anne Arundel County Maryland

1 Response

The best method in controlling crabgrass is to apply a preemergent herbicide in the spring and again 6 weeks later.Several herbicides are listed on the attached publication.http://extension.umd.edu/sites/default/files/_images/programs/hgic/Publications/HG101%20Guide%20to%2...
The problem with using corn gluten in Maryland is that the amount of fertilizer contained in the product exceeds the annual amount of nitrogen allowed.http://extension.umd.edu/hgic/umd-extension-lawn-fertilizer-schedule-home-lawns




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