Drive and Crabgrass?

[carbpow]

I have applied Drive XLR8 4 times over the last couple of months on the same crabgrass. It seems to stunt its growth but it sure isn't killing it. I use the recommended label rate and sticker. I make sure it's been at least two days since mowing and wait at least 3 days before mowing. Irrigation is controlled to prevent washing it off the first day or so and then normal irrigation resumes. I even mixed a tracker last time to make sure I was hitting it good. Anybody else had this problem? Is there some kind of bad crabgrass in S. Florida that resists this stuff?

[White Gardens]

Are you using the correct non-ionic surfactant with it?

Up north, I've used it and had good-great results with one application with at least 30 days + of residual stunting.


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[carbpow]

I use Dyne Amic which is a non-ionic surfactant.