Image by Annie Spratt

Holistic Traditional Training
For a New Generation of Practicing Herbalists

We've Moved to New Paltz, NY!

Professional Program

Find out more about our herbalism program

The ArborVitae School of Traditional Herbalism incorporates a number of traditional energetic approaches, including Traditional Western Herbalism, Vitalism, Ayurveda, and Traditional Chinese Medicine (TCM). Expert instructors come with a well-developed philosophy and practice, offering a range of perspectives that contribute to a diverse and exceptional herbal education.

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New to

Are you fairly new to herbalism? 

Take a look at our first year program entry.

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Furthering your

Do you already have a strong foundation in herbalism through education and/or practice?  Check out our second year program entry.

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Working with

Looking for clinical supervision working with clients? Our third year program, open to graduates of our second year program as well as practitioners, offers just that!


Now Accepting

Holistic Traditional Training for a

New Generation of Practicing Herbalists. Now accepting applications for the 2022-2023 school year that starts in September 2022 at our new location in the Hudson Valley.

Did you miss one of our 
Virtual Open Houses?

Don’t worry, we’ve recorded them for you!

ArborVitae Open House- April 2022
ArborVitae Open House- March 2022
ArborVitae Open House- February 2022

Meet The Team

ArborVitae’s administrators come from a variety of backgrounds, each using their unique skill sets to ensure ArborVitae provides the highest quality education and training in herbalism.

Diana Isidoro - Administrative Director & Director

Diana Isidoro


Administrative Director

Claudia Keel - Founder & Director

Claudia Keel

Director, Founder

Core Faculty

Richard Mandelbaum - Founder & Core Faculty

Richard Mandelbaum

Core Faculty



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Mailing List

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