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

Skipp Calvert
Alexandria, Virginia

Tim Conlon
Dubuque, Iowa

Jane Diamantis
McDonald, Tennessee

Laura Dowling
Alexandria, Virginia

Amy Golden
Falls Church, Virginia

Scott Plein
Bristow, Virginia

Holly Shimizu
Glen Echo, Maryland

Marcia Zech, Board Chair
Mercer Island, Washington



Joan Barclay
Chief Operating and Financial Officer

Brian B. Bauman
Communications Manager

Leslie Bauman
Rental & Venue Sales Supervisor 

Tammy Burke

Janet Daniels
Director of Accounting

David Ellis
Director, Communications & Editor of
The American Gardener

Leslie Fetty
Member Services Associate

Susan D. Klejst
Vice President of Development

Suzanne Laporte
President and CEO

Nora K. MacDonald
Associate Director, Membership & Member Programs

Katherine Somerville
Associate Manager, Programs

Claire A. Splan
Associate Editor

Peter Tajat
Managing Director, Property Operations

Mary Yee
Managing Editor & Art Director