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Having trouble with my runners ; they are a white self pollinating variety
growing extremely well with masses of flowers. These unfortunately are not
setting and are falling off. The house is well ventillated at all times with
doors and vents open fully. the roots are kept moist not sopping and other
plants are also growing well. when I have similar problems outside I watered
with a strong lime mix which helped ; not to keen to use this method in the
house.

Runner beans have a tendency to be rather later to pollinate than other
types of beans. Those growing outside flower well, but they don't often
crop on their first trusses - I think it is due to them relying on a
later type of pollinating insect. We don't grow them in our greenhouse
because of past failures to crop at all for us, though other people
succeed with theirs. We grow either dwarf or climbing French beans
inside, with dwarf French beans and runners outside. That gives us a
continuous supply of fresh green beans from mid May to late autumn and
there are plenty to go into the freezer for out of season use.
--
Alan & Joan Gould - North Lincs.