From 10 a.m. to noon on Saturday, May 9, the Piedmont Master Gardeners will hold a free plant swap at James Monroe’s Highland, 2050 James Monroe Parkway in Charlottesville. Gardeners are invited to bring vegetables, perennials, annuals, houseplants, shrubs, trees and herbs to trade. The Master Gardeners will also offer plants that participants can take home. Please check plants for insects or diseases before bringing them. No invasive species will be accepted. To register, visit https://piedmontmastergardeners.org/events/. Walk-ins are welcome.