Do you think Dalton Mcquinty may have a stash of roundup available?
I read that if you pull out the upper growth it promotes the roots to spawn even more and that's what I've done in the past.
I've totally lost a peony plant, candytuft phlox, lolipop lilies, rubarb, a Yucca and 3 very old rose climbers amongst this bindweed.
The only way to get rid of this
is to take out the entire bed and turn it into a lawn surface and let the lawn care technicians slap on their weed chemicals.
We've tried for the last three years to get this crap under control and have concluded that we're going to end up losing this flower bed come fall.