Troc Graines is an opportunity to share a moment of conviviality around the theme of seeds: gardening tips, recipes, traditional or surprising uses for plants.
Exchanges are made directly from one person to another, or with the help of the day's ephemeral currency offered by the associations. So you can participate even if you have nothing to trade. Drinks and pastries made by the associations' volunteers are available and can be paid for with the ephemeral currency of the day.
The barter is open to all. It's an opportunity to meet members of the co-organizing associations Canop'Terre and Eco-Citoyens d'Erstein, who can introduce you to their activities.