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permaculture - Re: [permaculture] Fast growing nitro fixers, semi tropics

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  • From: Toby Hemenway <toby@patternliteracy.com>
  • To: permaculture <permaculture@lists.ibiblio.org>
  • Subject: Re: [permaculture] Fast growing nitro fixers, semi tropics
  • Date: Thu, 18 Oct 2012 11:53:48 -0700

I've used various species of Calliandra in Hawai'i. C. calothyrsus is one of
the most common. It's a shrub, can be coppiced back. Not sure how subtropical
it will go, is used a lot in Central America. Good for alleys between citrus.
And it's pretty.

Toby
http://patternliteracy.com


On Oct 18, 2012, at 5:05 AM, Cory Brennan wrote:

> Just found this resource for nitro fixing fodder legumes, wonderful!
> http://www.fao.org/ag/AGP/AGPC/doc/Publicat/Gutt-shel/x5556e00.htm#Contents
>
> Would love to hear back from people on experience with legumes in any
> climate similar to Florida - sugar sand soils, sometimes extreme wet/dry,
> temperatures hot, humid in summer, often freezing in winter (down to 15
> degrees or below in many areas). I am looking to plant many fast growing
> multi use legume trees and want to make sure I am picking the best
> varieties. Leucaena, gliricidia, sesbania, are considered "invasive" in
> Florida. I am trying to find info on less invasive cultivars (though I
> agree with Toby Hemenway's assessments on "opportunists" I hesitate to be
> the one to personally bring thousands of opportunist trees into this
> relatively delicate ecosystem). Leucaena lan (I believe this is lanceolata)
> is considered not invasive but I have not found any of this cultivar.
>
> The native sweet acacia has gnarly thorns but is beautiful and works well
> where thorns are not a problem.
>
> What experience do people have with the non nodulating nitro fixers like
> cassia, etc, as far as actually putting nitrogen into the soils? I have not
> used them enough to really know how they do.
>
> On a different note, I'm still trying to determine the nitro fixing
> capabilities of gleditsia triacanthos in temperate climates.
>
> Koreen Brennan
>
> www.growpermaculture.com
> www.facebook.com/growpermaculturenow
> www.meetup.com/sustainable-urban-agriculture-coalition
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