Workshops & Events

Pfeiffer Center Products Sale

Wednesday-Friday, December 7-9, 2:00-5:00pm

The Pfeiffer Center's own-made biodynamic herb teas, salves, and lightroot herb salt will be available for sale at the Hungry Hollow Co-op. These very special hand-made products make wonderful holiday gifts — and be sure to treat yourself, too!

All proceeds from this sale benefit the Pfeiffer Center's educational programs.

Location: Hungry Hollow Co-op, 841 Chestnut Ridge Rd., Chestnut Ridge, NY.

The Agriculture Course:
An Intensive Study of the Origins
and Future of Biodynamics

2017 Focus: Nettle & Valerian, Healing Plants
for the Earth and Humanity

With Mac Mead, Megan Durney,
Jean-David Derreumaux, Harald Hoven,
Dr. Steven Johnson & Deb Soule

January 13-16, 2017
$365 (includes 5 meals)
Farm apprentices pay just $195

The Pfeiffer Center's 2017 midwinter intensive study of biodynamics offers participants an in-depth examination of two plants used in making biodynamic preparations: nettle and valerian. Through a combination of lectures, artistic activities, practical experiences, observation exercises, and conversation we will investigate what qualities give these humble plants their powerful medicinal healing powers.

This long weekend is truly a unique educational and social opportunity to broaden and deepen your understanding of the role of biodynamics in the development of humanity and agriculture. Join us!

Watch this space for more details on the program.


Mac Mead has farmed and gardened biodynamically for nearly forty years. As a co-worker at the Fellowship Community beginning in 1975, Mac learned biodynamic methods directly from former co-workers of biodynamic pioneer Ehrenfried Pfeiffer. Mac has gardened and farmed on every scale, from handwork to field-scale vegetables, tended an orchard, and managed dairy cows. Mac was the resident farmer at the Fellowship Community's Duryea Farm from 1997 until 2005, and has been the Pfeiffer Center's Program Director since 2007.

Megan Durney came to the Pfeiffer Center as an intern in 2007, following stints as a WWOOFer and post-Katrina AmeriCorps volunteer. As the Pfeiffer Center's Head Gardener, Megan trains and supervises interns, directs the creation of each year's planting calendar, manages produce sales (including the Pfeiffer Center's CSA and farm stand), and directs production of Pfeiffer Center herb salt, teas and salves. She also conducts the Neighbor to Neighbor afterschool program.

Jean-David Derreumaux has gardened and farmed at Camphill communities in France and the US. While at Camphill Village Copake (1986-2004), he created a biodynamic healing plant garden, developed workshops on processing plants for herbal products, and worked with a medical doctor on remedies made from medicinal plants. At The Center for Discovery (2005-15), he built six biodynamic healing gardens. Jean-David holds a degree in agricultural engineering from ESITPA and trained with Canadian herbalist Danièle Laberge.

Harald Hoven is the founder (1987) and director of Raphael Garden at the Rudolf Steiner College in Fair Oaks, CA, where he teaches many biodynamic farming and gardening classes. He manages Raphael Garden's 70-member, 50-week CSA, as well as its large seed-saving operation. Harald is a founder of the member-run Biodynamic Association Northern California (BDANC).

Deb Soule began organic gardening and studying medicinal herbs at age 16 alongside medical herbalist Mary Bove. She manages Avena Botanicals' Demeter-certified biodynamic gardens and is a frequent guest lecturer at conferences and an instructor for botany students, garden clubs, and medical practitioners. She is the author of The Woman's Handbook of Healing Herbs and How to Move Like a Gardener.


The course fee includes five meals provided by Threefold Café: lunch and dinner on Saturday and Sunday plus lunch on Monday. In addition, the nearby Hungry Hollow Co-op Natural Foods Market serves organic take-out, and there are many restaurants within driving distance.


If you need housing, you must make separate arrangements. Rooms are available in our dormitory, Holder House; in homes of community residents; and in nearby hotels. For housing information, please click here.


Please note: This is not an introductory course. Participants are expected to be familiar with Rudolf Steiner's Agriculture lectures and to have some working knowledge of biodynamics.

Course fee: $365; Farm Apprentices pay just $195. (The course fee includes five meals: Saturday and Sunday lunch and dinner, Monday lunch.) Financial aid: Farmers, NABDAP apprentices, and BDA members are encouraged to apply to the Biodynamic Association's scholarship fund.

Registration: To register online, click here. Prefer to pay by check? Click here to download a printable registration form (PDF).


Prefer to pay by check? Click here to download a printable registration form.

Questions? Directions to the Pfeiffer Center, information about housing, and more can be found at this page.

Need more help? Call the Pfeiffer Center (845-352-5020 x20) M-F, 8:30am-4:30pm, or email us at

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