On 15/06/2015 21:17, Nick Maclaren wrote:

I always get a few with no flowers, but this year the majority have
none or almost none. Does anyone know why, or what triggers broad
beans to create flowers?

I suspect it isn't warm enough yet. Mine are just about there now but
plants which should normally have been in flower on 5th June still
aren't out. It has been a cold spring and many things are delayed.
(there are still bluebells out in the woods here in N Yorks)

Anything that needs real warmth to get going is sulking at the moment.

--
Regards,
Martin Brown