Clover (Trifolium spp.): Clover is a common cover crop that forms a symbiotic relationship with nitrogen-fixing bacteria, enriching the soil with nitrogen.
Peas (Pisum sativum): Peas, including garden peas and snap peas, have nitrogen-fixing nodules on their roots, contributing to soil fertility.
Beans (Phaseolus spp.): Beans, such as black beans and green beans, host nitrogen-fixing bacteria in their root nodules, enhancing soil nitrogen levels.
Lupins (Lupinus spp.): Lupins are leguminous plants that fix atmospheric nitrogen in the soil, making them valuable for crop rotation and soil improvement.
Alfalfa (Medicago sativa): Alfalfa is a deep-rooted legume that not only fixes nitrogen but also brings up nutrients from deeper soil layers, benefiting other plants.
Soybeans (Glycine max): Soybeans form symbiotic relationships with nitrogen-fixing bacteria, making them a significant source of nitrogen for the soil.
Vetch (Vicia spp.): Vetch is a cover crop that belongs to the legume family and is known for fixing nitrogen in the soil, improving overall soil health.
Alder Trees (Alnus spp.): Certain tree species, like alders, engage in nitrogen fixation, contributing to soil fertility and supporting nearby plants.