Michael Mills gardens in Northwest Philadelphia, concentrating on ornamentals and shade planting. He is a board member of the Greater Philadelphia Chapter of the American Rhododendron Society, is involved with exhibits at the annual Philadelphia Flower Show, and regularly contributes plants to the Pennsylvania Horticultural Society's plant dividend program for members.
His column appears Fridays in Home & Design, alternating between questions-and-answers and "It's time to . . . ," a compendium of what garden tasks are appropriate for the season.