My pole beans have been suffering this year. The vines are very stunted and leaves are mottled and crinkled. I thought they weren’t getting enough water and then I thought it was the black aphids that killed the nearby fava beans. But I think it is probably a mosaic virus (maybe bean common mosaic virus or cucumber mosaic virus?). These viruses are spread by aphids and the only solution seems to be planting resistant varieties. I noticed that most of the pole beans at our local community garden also looked heavily affected. It must be a bad year for this virus. The problem is affecting both varieties of pole beans that I planted in my garden back in May (Italian Pole Beans and Blue Lake) and the Scarlet Runner beans I recently bought and have in pots on my porch. Fortunately my bush beans (Royal Burgundy, Provider and Haricots Verts) and soybeans are fine so far.