2 4 D mixing

[T in NE]

CT can be a persistent problem. Hit it with a full rate of 2,4-D and plenty of surfactant. It's going to take 2-3 weeks to start to see control. If it aggravates you toward Fall, hit it with 2% Roundup (plenty of surfactact) in September or October as the plant takes the poison into its roots before winter, ensuring complete control.
d

Roundup kills the grass, I'd just keep after it with 2,4d every couple weeks. It will spread as the stalks die, so keep watching outside the perimeter.

 

[T in NE]

CT can be a persistent problem. Hit it with a full rate of 2,4-D and plenty of surfactant. It's going to take 2-3 weeks to start to see control. If it aggravates you toward Fall, hit it with 2% Roundup (plenty of surfactact) in September or October as the plant takes the poison into its roots before winter, ensuring complete control.
d

Roundup kills the grass, I'd just keep after it with 2,4d every couple weeks. It will spread as the stalks die, so keep watching outside the perimeter.

The only way I have seen good results on CT is to spot spray individual plants repeatedly over the summer and fall. I thankfully do not really have thick patches of them.

+1
We used Hired Hand.