John Polk wrote:A lot of those links were not working for me.
neil bertrando wrote:If I were to put in sub-tropical to tropical long term canopy tree legumes, these would be at the top of my list:
carob, tamarind, ice cream bean, tipuana tipu.
David Goodman wrote:@Matt Saager
Jujube is a nitrogen-fixer?
jonathan goldsmith wrote:does anybody know if a American Elm tree a nitrogen fixing tree ?