On Sun, 28 Jun 2009 15:44:40 +0100, Plum wrote:

In order to get the best out of the broad beans nitrogen fixing for the
soil, when they are finished, do I : a) pull up and chuck, b) cut
down and leave roots in soil; or c) leave whole plant even when
throroughly dead and unsightly? Anyone know? Ta for replies.

b they may even grow back and give you a second (lighter) crop