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2026 PPA National Symposium
2026 PPA National Symposium
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Maeve Bassett
Beal Botanical Garden and Campus Arboretum at Michigan State University
Applied Ethnobotanist and Education Director
Andrew Bunting
Pennsylvania Horticultural Society
Vice President of Horticulture
Jeff Epping
Epping Design & Consulting, LLC
Owner
Shannan Gibb-Randall, MLA, PLA
InSite Design Studio
Principal
Wayne Gruber
Niemeyer Landscape Supply
Horticulturist
Hans Hesselein, RLA
Apiary Studio
Principal
Dr. Erin Hill, PhD
Michigan State University
Weed Science Diagnostician
Brent Horvath
Intrinsic Perennial Gardens
President
Dr. Michelle Jones, PhD
Ohio State University, Horticulture and Crop Science Department
Professor and Associate Chair for Research
Martha Keen
Apiary Studio
Partner + Horticulture Manager
Debra Knapke
The Garden Sage, LLC
Owner
Sarah Leaskey, RLA, ASLA
Refugia Design
Chief Operating Officer
Dr. Justin Lombardoni, PhD
Chicago Botanic Garden
Ornamental Plant Breeder
Dr. Roberto Lopez, PhD
Michigan State University
Associate Professor
Jeff Lorenz
Founder
Refugia Design
Dave MacKenzie
Hortech, Inc.
Owner
Stefano Marinaz
Stefano Marinaz Landscape Architecture
Owner
Dr. Tony Reznicek, PhD
University of Michigan Herbarium
Curator Emeritus
Laura Robles
Walters Gardens, Inc.
Regional Product Manager
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