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PRE-EMERGENT HERBICIDE: Quali-Pro's Prodiamine 65 WDG ... Golf Courses EFFECTIVE AGAINST: Annual bluegrass (Poa annua), Henbit, Knotweed, Chickweed, Spurge, Foxtail, Goosegrass ACTIVE INGREDIENT ...

The establishment of new plants can occur at any time of the year, though it is less likely under dry conditions, and annual poa is often found to grow most aggressively in autumn, winter and spring.