A Dedicated Team

AHS BOARD OF DIRECTORS, (L-R, Marcia Zech, Tim Conlon, Laura Dowling, Skipp Calvert and Holly Shimizu)

The American Horticultural Society’s Board of Directors and staff work closely together to operate our national non-profit and to provide for the stewardship of our River Farm headquarters.

Our Board brings to the table a broad range of talents and expertise that help guide our organization’s mission, while our staff carries out the day-to-day tasks required to achieve our goals.

Learn about careers at AHS.

Board of Directors

Doug Barker
Washington, DC

Skipp Calvert
Alexandria, Virginia

Tim Conlon
Dubuque, Iowa

Dr. Larry Deaven
Los Alamos, New Mexico

Laura Dowling
Alexandria, Virginia

Amy Golden
Falls Church, Virginia

Scott Plein, Board Chair
Falls Church, Virginia

Holly Shimizu
Glen Echo, Maryland

Philip Tabas
Arlington, VA

Marcia Zech
Mercer Island, Washington

Suzanne Laporte, President and CEO


Courtney Allen
Director of National Programs

Leslie Bauman
Events Manager

Mercedes Bryant
Director of Travel Studies 

Tammy Burke

David Ellis
Editor of The American Gardener

Leslie Fetty
Member Services Associate

Susan Friedman
Director of Marketing & Communications

Jack Greenfield
River Farm Grounds Manager

Sarah Jordan
Assistant Marketing Manager

Suzanne Laporte
President and CEO

Lia Sanchez 
Executive Assistant

Philip Saville
Assistant Manager, Development and Travel

Claire A. Splan
Associate Editor

Peter Tajat
Managing Director, Property Operations

Sheri Thorpe
Director of Finance

Katie Tukey
Director of Development and Engagement 

Mary Yee
Managing Editor & Art Director of The American Gardener