String beans would grow up a trellis. So would the asian long beans. As long as it gets at least 6hrs of sun.
The sun beats on that wall. I’ll check out string beans.
OH BOY, do Asian long beans grow...Some of mine don’t make it into the house...I just eat them raw..they are lovely, especially the green ones. Hubby came out one evening when I was picking some...in his hand was a dip, and the other hand a small tray with 2 martinis. Nothin’s better’n fresh green Asian beans with a dip and a nice frosty martini in the garden.