Certainty on Quackgrass or Nutsedge

I have a little nutsedge (it could be quackgrass; it doesn't matter much), so I've sprayed those bits with Certainty at 0.75 ounces per acre equivalent.

I'm hoping that will knock it out. If not, I still have enough donor sod to repatch the entire area with plenty left over.

The annuals are now going in as well...ten flats worth. This year, I've used marigolds, salvia (red and blue), ageratum, dwarf snapdragon, rocket snapdragon, Orchid Madness petunia, star sapphire petunia, alyssum, Impatiens, Gazania, verbena, Melampodium, annual phlox, and cannas.

I'll take photos once they start to grow a bit. I won't finish until the middle of this week, I think.