Paz
Crowing
You can water it, then cover with black plastic for a few days, it cooks them. I would however leave the plastic on for the entire summer, depriving the roots from nutrients so it can’t grow back. The other way it to dig all the roots out, one metre deep.Hate to say it, but the ONLY way to deal with bindweed is chemical, and not just once. It still takes forever to kill and starve that plant.