came across this in my wanderings
http://www.permacultureguild.us/bill-bilodeau-urban-permaculture-and-community-building/
Bill Bilodeau: urban permaculture and community building
"Bill has created an organic garden paradise on this lot. Complete with several dozen chickens, a kenaf forest to feed them"
the leaves are high in protein and are edible
chickens can also eat the leaves
i've ordered some seeds from e-bay
will try growing them next year