Robert Pavlis has been an avid gardener for over four decades. He is the owner and developer of Aspen Grove Gardens, a 6-acre botanical garden that features over 3,000 varieties of plants. Specializing in soil science, he has been an instructor for Landscape Ontario and is a garden blogger, writer, and chemist. The author of Building Natural Ponds, Pavlis is a well-known speaker whose audiences include Master Gardener groups, horticultural societies, orchid societies, and garden shows such as Canada Blooms and the FarmSmart conference. He teaches gardening fundamentals at the University of Guelph and garden design for the City of Guelph, Ontario, where he currently resides.