[snip]

So I should do this in spring...

In my garden, anytime is the bindweed growing season! Two years ago I let
it go and by the end of the summer, most of the top half of my (overgrown)
garden was covered. I'd attack it now and keep attacking until it's at
least under control!

Having been ruthless last year, we've now left with a few persistent
stragglers holding out amongst the brambles. But it is very much improved
and I do feel that we are at least holding it back, if not completely
eradicated it.

Paul DS