picture was too big, here they are

and one more

No replys from the smart guys yet?

I have been using the "Triangle Approach" this year and I am seeing results. It has been a battle but you look like you could see much better results.

I have been buying my Bayer Advanced weed control from Amazon. Its cheaper than at HD or Lowes.

Here is a link that might be useful: Weed Control: The

I'm the "author" of the Triangle Approach, but I don't see anything about what was the cause of the sudden spurt in weeds. Did the person that fixed the irrigation system set it to something dumb like 10-15 minutes a day? How are you watering, mowing and fertilizing the lawn? Something changed, and I really doubt that it was the irrigation system broke for a month. Did you disturb the soil in any way?

Post emergent hebicides for st.augustine, Atrazine gets some broadleaf weeds and most annual grasses, Image or Manage for sedges, and 2,4D amine, dicamba,mcpp many broad leaves, dandelion and plantain. Going forward I would cut the water back during the late fall/winter. This looks like a overwatered lawn to me. I would also look into the use of a pre emergent herbicide. Mowing height should be at 3" and if you have not fertilized yet this spring it's probably time to start.