Caragana is a legume and nitrogen-fixing. I understand the Russians
have found that it promotes the growth of poplars when they are grown
together. I have only seen it at the Dominion Arboretum in Ottawa. It
seemed to me that the foliage was relatively sparse and the shade
cast correspondingly light.
I have read of proposals for use of the pea-like seeds of caragana by
allowing chickens to run beneath them but I don't know of anyone who
has practical experience with this. Possibly someone could be found
on the permaculture list.
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