Hi all. New boy here.

Last summer, my roses (Rosa Rogosa and Gloire de Dijon), as well as my Pyracantha were totally engulfed in bindweed. It wrapped itself tightly around the stems; I'd been cutting the stuff away, but left it for a month or so and the next time I looked all I could see was the bindweed.

Q: Is is possible to apply "Roundup" weed killer (B&Q) to the bindweed with zero danger to the roses and Pyracantha in view of their close proximity? I'm a complete novice, but assume that the bindweed roots might be wrapped around those of the roses and Pyracantha. The last thing I want to risk is killing the roses and Pyracantha as they've been grown as security plants and have taken 3 years to get this far. Is it at all feasible to apply the Roundup to a bindweed leaf as the stuff emerges from the ground and it just surgically 'take out' the the weed only?

Stormin'