A seed swap is like a big trading game where people exchange seeds with each other. It's kind of like when you trade your toys with your friends, but instead of toys, it's seeds. People who love growing plants join the seed swap to exchange seeds with other people.
When people exchange seeds, they are sharing the plants they grew in their garden with others who want to grow them too. People bring their own seeds to the swap, and they can then select from the seeds brought by others. This way they can try growing new plants that they might not have had access to before.
Seed swaps are a great way to exchange interesting and different types of seeds, which can be hard to find in stores. Some plants are easy to grow and some are harder, so you can ask the person you're trading with for their advice on how to take care of the plant.
Overall, a seed swap is a fun and educational way to share plants that you love and learn from others who love plants too!