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John Fulton


John Fulton
Former County Extension Director



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In The Backyard

Horticulture columns and tips done on a timely basis

Crabgrass Prevention Application

Posted by John Fulton -

With the advanced development this spring because of temperatures above normal, it looks like now is the time to apply crabgrass preventative treatments. Normally the timing is about April 1, but forsythia looks like it is ready to bloom about two weeks early. Common pre-emergence chemicals include benefin, benefin plus trifluralin, dithiopyr, pendimethalin, and prodiamine. Due to the short-lived nature of the chemicals, a second application will be needed in about six to eight weeks. As a reminder, if you are seeding new grass, these applications for crabgrass are not an option. The chemicals can't tell the difference between weed seeds and what you put out.


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