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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 Germination Has Begun

Posted by John Fulton -

The forsythia in the area has been blooming for a week or two now. This coincides with soil temperatures where crabgrass germination starts to occur. Crabgrass germinates over a long period during the spring and summer, so germination inhibitors applied now would still be useful. However, you've most likely missed the first flush of germinating seeds.

If you have missed some early germinating crabgrass, you can try one of the post emergence chemicals (put on the actual crabgrass when it is small) such as DSMA or MSMA. They may temporarily discolor lawns, and all the statements about not applying to new seed you have intentionally sown apply to these herbicides – the same as using the germination inhibitors.

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