geekIT:

 

BTW: Timmmay, I've probably sprayed this stuff (with Country Mile 360 glyphosate that I buy in bulk from one of the local farm supply stores) a dozen times without effect, so I can definitely say it doesn't work. It might with a surfactant, as some of you suggested, but neat glyphosate, nope. And I always spray at around double the recommended dose.

 

Could be it won't work on this at all just due to the nature of it, you've got a few suggestions so try the others. It's not meant to work on blackberry either, I found that in sufficient quantity and strength it did.

I tend to go straight to nuclear options as I've tried organic and such in my greenhouse and it just makes the bugs / problems bigger.