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Mike from Apex, Nc writes

I have applied Prodiamine 65 WDG (Generic Barricade) twice in the spring to kill poa annua (annual bluegrass) but the weeds keep coming back. Any advice on what to do to eradicate this weed?


Prodiamine 65 WDG is a pre-emergent herbicide that must be applied before the seedlings begin to germinate, in order to be effective. For Poa Annua, we recommend doing a pre-emergent application in the fall, in order to prevent the weed from actively growing in the spring. Please refer to the product label for complete application instructions, and use as directed. Poa annua is a winter annual weed that germinates in the fall and flowers in the spring, then dies as the temperatures rise in the late spring, early summer. In North Carolina, about 80% of poa annua germinates in a 60-day window from September 1 to October 30.

Please review our Poa Annua Treatment Guide for more infromation and recommendations on treatment. 

Answer last updated on: 05/28/2021

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Prodiamine 65 WDG (Generic Barricade)

Prodiamine 65 WDG (Generic Barricade)

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