Planting store bought seeds in every garden means everyone is growing plants that are genetically identical, a development that erodes biodiversity. Seed-growers and seed-savers at seed banks are trying to change that: they harvest, save and replant the seeds from their best-growing plants thereby increasing biodiversity and botanical resilience to disease and harsh conditions. This approach is made even more impactful when several gardeners get together to form a seed circle and exchange surplus seeds with each other. The varieties they grow become very well adapted to local conditions and grow successfully year after year.

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