Surrey Organic Gardening Talks Plant Swap is from 7.30pm until 9pm on Friday 29th May 2026 at The Garden Hall, Honeywood Walk, Carshalton, SM5 3NX. There’s free entry. This evening event provides a chance to swap any excess plants you have for something new. Swap your extra bedding plants, herbaceous perennials, veg seedlings, and houseplants – any extra plants you have. You may find some unusual plants at this swap. If you don’t have any plants to swap, you can buy plants at this event.