If you are serious about exhibiting I would advise you to get this RHS
publication
RHS Show Handbook
This essential reference is the official RHS guide to organising, judging
and competing in horticultural or gardening shows where fruit, vegetables
and flowers are exhibited.
Paperback 160pp. ISBN 1874431981

Price £7.95

As for an inch of stem on Runner beans,,,,,,,,,,,,,********** the
normal sprig that comes with picking is all that is required.


--
David Hill
Abacus nurseries
www.abacus-nurseries.co.uk