re: St. Aug is Growing Again...Time to Fertilize?

Any broadleaf post-emergent herbicide will work.

I prefer (and have had better success with) stuff you don't get at big box stores. I sprayed Blindside just last weekend. Blindside is very aggressive though so I am not sure I would recommend if you do not have a lot of experience (successes and failures) in application.

But you could probably use any of the following herbicides and kill your clover problem dead:

Blindside Herbicide
Tenacity Herbicide
Dismiss Turf Herbicide
Celcius WG Herbide

Just pay close attention because some of them require MORE application to kill certain clover. This is the time of year you can go on the higher end while your grass is still dormant and temps are cool.