I wish I could help, but alas I'm having problems with this pesky plant as well (see my post about 4 down from yours).

I manage to kill it with Roundup, but I'm slowly taking out all my St. Augustine along with it. I wonder if putting down a premergant like the corn gluten stuff would work to stop it from seeding, then we could slowly remove it by hand?

I wish there was a selective herbicide that would kill it. Or is there? If so, please let me know.
-Thirsotn

Hi Thurston,

I read your post, and very nearly posted this under yours but didn't want to hijack it. This weed is so frustrating!

I've thought of using a preemergent too, but my forest is just starting to self-regenerate, so that option is out for me :( I was hoping that someone may have had some success in keeping it smothered. Ah well, looks like I will have to get out the black plastic bags and spend this weekend pulling it out. We do have a spray in New Zealand that is aimed at horrible weeds like WJ, kikuyu and couch grasses, etc but I can't remember its name. I think it was Target, but I've read so many spray labels lately they've all merged into one!!! I'm heading back to the garden centre later today, so will find the name for you.

Best of luck!