Plants: Nitrogen Fixers for Temperate Climates Nitrogen Fixing Plants for Temperate Climate Permaculture TALL TREES for Temperate Climate Permaculture (50 feet or taller) Gray Alder, Alnus incana, Zone 2-6 Black Locust, Robnia pseudoacacia, Zone 3b Japanese Pagoda Tree, Sophora japonica, Zone 4-8 SMALL TREES AND MEDIUM-LARGE SHRUBS for Temperate Climate Permaculture (3-50 feet tall) Prarie Acacia, Acacia angustissima, Zone 7-10 Silk Tree or Mimosa, Albizzia julibrisin, Zone 6 Alder,Italian, Alnus cordata, Zone 6 Alder, Speckled, Alnus rugosa, Zone 2-6 Alder, Smooth, Alnus serrulata, Zone 5-8 False Indigo, Amorpha fruticosa, Zone 3 Siberian Pea Shrub, Caragana arborescens, Zone 2-7 Russian Pea Shrub, Caragana frutex, Zone 2-7 Pygmy Pea Shrub, Caragana pygmaea, Zone 3-7 Mountain Mahogany, Cercocarpus montanus, Zone 6 Bladder Senna, Colutea arborescens, Zone 5-7 Russian Olive, Elaeagnus angustifolia, Zone 2 Silverberry Practical Solutions Categories Broadscale Agriculture Gardens and orchards Plants: Nitrogen Fixers for Temperate Climates Copied to clipboard