Posted: 11/10/2016 at 08:26
Spraying at this time of year will not work. Weed killer needs to be sprayed onto weeds while they're in active growth.
I don't think there's a lot you can do at the moment that will deal with the bindweed. I'd remove the plants you want to save in the spring and pot them up, then wait for the bindweed new growth to appear and spray with glyphosate, let if go brown , wait for regrowth and spray again. It may take several applicationS and a lot of patience.