Crabgrass in Northeast - Knowledgebase Question

East Fishkill, NY (Zone 5A)
Avatar for kuz3
Question by kuz3
March 26, 2006
When should crabgrass preventer be applied in the Hudson Valley of New York.

Answer from NGA
March 26, 2006
Crabgrass preventer works as a pre-emergent, meaning it stops the seeds from germinating. Crabgrass seeds begin to germinate very early while the soil is still cold. The rule of thumb is to put it down when the yellow forsythia bushes begin to show color in your neighborhood. The exact date will vary a bit from year to year depending on the weather.

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