Disappointing Beans

in Fruit & veg
Grew climbing, runner and dwarf green beans last year, with great success. This year, (in a different bed) lots of problems. The dwarf beans were extremely thin, some bobbly and others almost dessicated. The runner and climbers look okay, though some have gone a bit purply, but many are stringy to the point of being inedible. Today I harvested some, used a potato peeler to peel the strings off both seams, cooked and put them in the blender for a soup, as a last resort. Even so I still had to sieve the soup (and clear out the drain afterwards)
I've watered them every evening since this drought started, so I know it's not lack of water. Perhaps they just don't like so much sun? Any views?

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I grow dwarf and runners as do both my neighbours. We've all got the same problem. We're all suffering from blackfly too (beans not neighbours!)
As far as I recall, beans do not like heat, and we've had a lot of that lately
Billericay - Essex
Knowledge is knowing that a tomato is a fruit.
Wisdom is not putting it in a fruit salad.
Gardening in Central Norfolk on improved gritty moraine over chalk ... free-draining.
All we are saaaaaying, (boomchacha boomcha)
Is give beans a chance
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