Horticultural aide memoire No. 36: Kill bindweed
Bindweed, convulvulus, the devil’s guts: call it what you like. You can keep digging the off-white roots out for the rest of your life and no cure will be in sight. Better by far to apply a simple chemical solution. Suitably clad, unwind a length of the offender from a plant stem and lay it flat along the ground. Spray glyphosate or smear it on with an applicator, especially targeting the youngest leaves. These are the most susceptible. Do the same to a few other shoots and wait for three weeks. There should be no further trouble from that quarter.