The Role of Community Seed Swap Events in Urban Biodiversity

Community seed swap events promote urban biodiversity by letting residents exchange heirloom, native, and rare plant seeds, reducing reliance on commercial seeds that often lack genetic diversity. These events—held monthly in parks or community centers—bring together gardeners of all skill levels to trade seeds and share growing tips.​
In Portland and Berlin, seed swaps have preserved over 160 rare plant varieties, from purple cauliflower to striped sunflowers. Participants learn to save seeds from their harvests, ensuring genetic diversity for future growing seasons. The events also host workshops on organic gardening, teaching attendees to grow plants without synthetic pesticides. Community seed swap events turn urban gardeners into stewards of biodiversity, ensuring rare plant species aren’t lost to mass production.

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