Michael Cox wrote:What about planting them in the shade of something that climbs?
Runner beans spring to mind. There is a bean frame design that would be ideal. Do a search for "munty frame".
The brean grow up and over a framework, following strings. You can plant the bed beneath the framework with salad plants that prefer a cooler/shaded location like lettuce.
I have 4' x 4' beds. So are you saying the last row of square feet on the west side would be good for the climbing crops? That way the lettuce is shaded from afternoon sun?
Or should the climbing row be on teh south side of the 4' x 4' bed? That way lettuce is shaded from mid day sun?