For those of you into permaculture, you know the importance of nitrogen fixing plants. These plants, especially when pruned release nitrogen into the soil, helping to boost fertility to the plants nearby. By practicing chop and drop when moisture exceeds evaporation, you can supercharge the establishment of a food forest, or a timber forest. These plants can also be great companions in a garden or orchard. Be careful in the garden, as some nitrogen fixers can be invasive.