How deep should a runner bean trench be?

[steveadlem]

How deep should a runner bean trench be?

[snakeshack]

About a foot should do, line the bottom with multiple layers of wet newspaper to retain moisture


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[Two_Sheds]

Many of us no longer bother making trenches at all

[Kristen]

Many of us no longer bother making trenches at all

I never have, but am thinking of trying it - to get more "moisture holding material" at the roots of the bean plants, rather than just incorporating organic material [into the whole bed in general]

Perhaps I should just try half-the-row so I can see how it compares

[Two_Sheds]

My best version of the trench was using the contents of a dalek, well rotted: I just raked the heap level and planted the beans into that: the moisture retention was terrific and the yield very good