Lupins are probably the best nitrogen fixers of all the Legume family. Maximum soil improvement will be achieved if the entire growth is turned under prior to full bloom when the nitrogen levels are highest. Though the blooms are so pretty you can always leave one or two to flower! 90cm

The planting of seeds for "green manure" is one the best, most ecologically friendly ways to improve the quality of your soil. They will add nutrients and organic matter, naturally improving all soil conditions, helping to suppress weeds and even protecting the soil from erosion by adding structure.

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