Contact AHTA

AHTA is a professional organization and does not have any employees of its own. Our work is made possible by our volunteers and through administrative support provided by SBI Association Management. SBI serves many other local, national, and international nonprofit associations.

To contact AHTA, you may write, call or send us an e-mail. When you call the AHTA office, any one of the SBI staff will be able to help you.

American Horticultural Therapy Association

2150 N 107th St, Ste 205
Seattle, WA 98133
Phone: (888) 294-8527
Fax: (206) 367-8777
Email: [email protected]


Association Executive
Stacey Williams

As the Association Executive, Stacey Williams provides direct support to the Board of Directors, staffing their meetings, providing both strategic guidance and operational planning support. 

Conference Manager
Karen Thompson

Karen Thompson is the AHTA Conference Manager. She works with the AHTA President and Conference Committee to plan and manage the annual conference.