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Old 08-24-2000, 04:14 AM
Kent Lawns Kent Lawns is offline
LawnSite Senior Member
 
Join Date: Jan 2000
Location: Midwest
Posts: 870
16-20 weeks is extremely generous.

The reality is the crabgrass seeds from the previous season attempt germination and are killed by the crabicide in the early spring.

Sure, the longer the window, the better, but with good irrigation and healthy turf, even TEAM, with 4-6 week effectiveness prevents most crabgrass.
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