Black fly gather at the top of Broad beanstalks at this time of year this isa good way to deal with them.
http://www.photoworks.com/slideshow/album/AD5F35339CF5?source=pw980
Black fly gather at the top of Broad beanstalks at this time of year this is
Cut the growing tip off after the forth clump of flowers appear on the plant. Black fly feed on the growing tip.
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