It is possible to leave the roots of runner beans in the ground untill the
following year,the problem is, that ,
1 they will not crop so heavy,and will get less and less each year.
2 depends on weather, heavy frosts will kill the roots in the ground, as
wil a lot of rain, rot them,its a lazy way of gardening,some people lift the
roots like Dahlia roots ,store them in a dry shed then plant out in a trench
with plenty of farmyard manure, not to deeply dug!!I have found to get the
best Runner Beans,(And I Show)is to trench in farmyard manure/kitchen waste
and newspaper,in November, wait untill 1st last week in May scoop out a
shallow hole at the end of the trench ,broadcast the bean seed in, cover
with soil, leave untill they are 4 inches above ground then transplant into
the trench leaving an inch of trench uncovered to hold water, in the dry
weather!!!

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