Show up at to the H Street Farmers Market at 10am with any plants to you want to swap and join the fun. The swap organizers plan to wrap up before 11am, so don't be late. There are some basic rules (e.g. label your plants, and no invasive species), so make sure you check those out before packing up your green things. The market is located on the south side of the 600 block of H Street.