[permaculture] Nitrogen fixing trees in temperate climates

Lisa Rollens rollens at fidnet.com
Fri Aug 8 23:45:02 EDT 2008


Thank you, also, Doug, for your response to my question and info that you 
have read ...esp the black locust info!  I really like such multi-purpose 
trees!  If you have any thoughts about interspersing them among my fruit 
trees, feel free to share.  Thanks, Lisa


----- Original Message ----- 
From: "Douglas Woodard" <dwoodard at becon.org>
To: "permaculture" <permaculture at lists.ibiblio.org>
Sent: Tuesday, August 05, 2008 6:25 PM
Subject: Re: [permaculture] Nitrogen fixing trees in temperate climates


>A few years ago I encountered a book several decades old at that time (I
> think a Dover reprint, can't remember title or author, just possibly
> Aldo Leopold's "Game Management") which showed pictures of conifers (I
> think white pine or white spruce) grown in Wisconsin with and without
> black locust. The conifers grown with black locust grew much faster.
>
> Around 1980 I read an account of some Russian work (possibly from
> somewhat earlier, 1969?) which reported that poplars grown with caragana
> grew faster.
>
> I have been told that dwarf hackberry in the Niagara Peninsula here show
> a growth spurt a few years after planting which is due to their picking
> up helpful symbionts which grow in association with their roots,
> producing root proliferation. I don't know if they fix nitrogen or not.
>
> Doug Woodard
> St. Ctharines, Ontario, Canada



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