Tyler Arboretum Staff Members

Meet our Executive Director

Rick Colbert
Executive Director
Tel: (610) 566-9134
Extension: 207

_KPA5731Rick Colbert has 30 years of progressive experience in public horticulture and has served as the Executive Director of Tyler Arboretum for the past 23 years. He received his B.S. in Agriculture, with an emphasis on plant science and ornamental horticulture, and M.B.A. from the University of Delaware. Mr. Colbert has served as a peer reviewer for the Pennsylvania Historical and Museum Commission, as a board member of the American Association of Botanical Gardens and Arboreta, and on the Arthur Hoyt Scott Medal Award Committee and The Pennsylvania Horticulture Society Award Committee. His work has been recognized through honors such as the Award of Merit from the Pennsylvania Horticultural Society and the Outstanding Professional Member Award of the Middletown Township Business and Professional Association.


Meet our Senior Management Team

Mike Karkowski
Director of Horticulture
Tel: (610) 566-9134
Extension: 222

Mike came to Tyler in 2004. He is responsible for the management of the Arboretum’s Horticulture Department, which maintains Tyler’s collections, plant records, natural areas, hiking trails and historic buildings. Mike earned a Bachelor of Science from Purdue University in Landscape Horticulture and Design. His previous work includes Horticulturist and Director of Physical Plant and Grounds for The American College and Hardscape Consultant for a North Shore firm in the Chicagoland area. Mike enjoys building projects at home and church, building tree houses for his two children and kayaking with family.


Amy Mawby
Director of Public Programs
Tel: (610) 566-9134
Extension: 214

Amy-MawbyAmy came to Tyler in 2013. She is responsible for the management of the Arboretum’s Education Department and oversees the coordination of volunteer services and Visitor Center staff and operations. Amy earned a Bachelor of Science from Cornell University and a Master of Science degree in Public Horticulture from the University of Delaware’s Longwood Graduate Program. She previously worked as Education Coordinator for Bowman’s Hill Wildflower Preserve and has interned at Morris Arboretum, the New York Botanical Garden and Cornell Plantations. Amy is a bit of a shutterbug and enjoys nature photography.


Meet Our Staff Members

Listed by Department


Beth Hoppe
Tel: (610) 566-9134
Extension: 204


Laura McPhail
Communications Coordinator
Tel: (610) 566-9134
Extension: 208


Mary Beth Jackson
Senior Dev Mgr, Leadership Gifts
Tel: (610) 566-9134
Extension: 206

Kathryn Ombam
Development Associate
Tel: (610) 566-9134
Extension: 209

Drew Schmidt
Corporate Development Associate
Tel: (610) 566-9134
Extension: 206

Office Manager

Darcy Gibb
Office Manager
Tel: (610) 566-9134
Extension: 200

Special Events

Sally Rogers
Special Events Manager
Tel: (610) 566-9134
Extension: 210


Martha L. Moore
Youth Education Coordinator
Tel: (610) 566-9134
Extension: 202

Joanne Landau
Tel: (610) 566-9134
Extension: 215

Part-time Educators:

Corinne Davis

Margery Fields

Sue Lucas

Allison Mafodda

Karen McDonald


Education (cont)Rachel Ndeto

Lauren Ritchey

Vail Ryan

Kristin Simmons

Molly Scott

Maria Wanenchak


Alison Dame
Plant Recorder
Tel: (610) 566-9134
Extension: 221

Austin Deputy
Tel: (610) 566-9134
Extension: 221

Stephanie Santucci
Tel: (610) 566-9134
Extension: 223

Jerry O’Dell
Rhododendron Garden
Tel: (610) 566-9134
Extension: 305 voice message only

Jeff Wilson
Arboretum Manager
Tel: (610) 566-9134
Extension: 219

Paul Strommer

Visitor Center

Chris Lawler
Visitor Center Coordinator
Tel: (610) 566-9134
Extension: 212

Joseph Giordano
Visitor Center Associate
Tel: (610) 566-9134
Extension: 212

Annemarie Rapp
Visitor Center Associate
Tel: (610) 566-9134
Extension: 212


Julia Lo Ehrhardt
Volunteer Coordinator
Tel: (610) 566-9134
Extension: 205

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