Portsmouth Master Gardeners Association is a non-profit organization that supports the work of the Virginia Tech Master Gardener program. The organization offers various services, including garden talks, green thumb gardening classes, outreach projects, and youth projects. They also provide resources such as fact sheets on popular gardening topics, helpful websites, and plant societies. Additionally, they host events like the Olde Towne Farmers Market, Open Garden & Fall Festival, and Rain Barrel Classes.