My runner beans have reached their zenith! Should I pinch off the leading shoot, or encourage it to go along the horizontal? (Or somehow increase the vertical?)
I'd pinch the top off. It'll still grow taller for a while though. I do sometimes leave mine to continue growing and the tops become a thicket of tangled stems and the beans that form within the thicket get seriously curled up in the tangle and are difficult to harvest without them snapping.. Pinching the top off will make it bushier lower down (with more beans) which is easier to control.
Billericay - Essex
Knowledge is knowing that a tomato is a fruit. Wisdom is not putting it in a fruit salad.
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It'll still grow taller for a while though.
I do sometimes leave mine to continue growing and the tops become a thicket of tangled stems and the beans that form within the thicket get seriously curled up in the tangle and are difficult to harvest without them snapping..
Pinching the top off will make it bushier lower down (with more beans) which is easier to control.
Billericay - Essex
Knowledge is knowing that a tomato is a fruit.
Wisdom is not putting it in a fruit salad.