a university-trained volunteer who serves as a horticultural educator within a community
a volunteer, trained by Extension educators, who provides service to the community by assisting homeowners with gardening questions
Master Gardener is a volunteer program affiliated with a Cooperative Extension office and a land-grant university that educates the public on gardening and horticultural issues. Typically Master Gardeners answer question via phone, speak at public events and participate in community gardening displays. Master Gardeners are active in 48 states in the United States and four Canadian provinces.