This will be the fourth community seedswap to be held in Brighton. Save vegetable, herb or flower seed, and swap with other gardeners and local growers, seeds can't be hybrids and must have been organically grown.

A particular benefit of a local seed swap is that most of the seeds being swapped will be adapted to local conditions and will therefore be able to grow well. Further to this, the process of seed-swapping leading to the building up of local varieties of crops plays a vital role in the wider picture of preserving biodiversity.

An untold number of crop varieties have become extinct since the onset of industrial agriculture in the last 50 or so years and the only way to reverse this trend is for the existing heritage varieties to be spread and grown as widely as possible. As well as being important in order to preserve the diversity of nature, swapping seeds also plays a crucial role in reclaiming control over the food chain from large seed companies. Profit in the seed business relies on customers coming back year after year, which has led to the development of various hybrid seeds specifically designed to become sterile after one season to serve the business interests of seed companies.

This commercial attitude towards seed has shown itself to be fundamentally unsustainable and is totally contradictory to the spirit of seed-swapping which regards the cycle of life from seed to plant to seed as a precious gift of nature, to be shared with everyone. Seedy Sunday also hopes to promote social diversity so that people of all ages and backgrounds can come together to discuss their crops and much more, enabling connections to be made between growers in the local community so that people can work together on ensuring their own food security.