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With Mac Mead, Megan Durney, Harald Hoven, Kim Pace, and Sherry Wildfeuer

Using Rudolf Steiner’s agriculture course as a foundation, we will delve into the qualities and mysteries of earth, air, fire, and water: how they guide the processes of life in the cycle of the year, and their creative influence on the workings of the biodynamic preparations and the building of the biodynamic farm individuality.

We will work in large and small groups, through art, movement, observation exercises, and hands-on activities.

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.


MAC MEAD, a biodynamic farmer since 1975, mentors the Pfeiffer Center and Duryea Farm Leadership Team and is lead faculty of the Pfeiffer Center’s adult education programs. Mac regularly speaks at conferences of the Biodynamic Association (BDA), the Northeast Organic Farming Association, and the Pennsylvania Association for Sustainable Agriculture. In 2016, he was an invited speaker at “The Spirit of Sustainable Agriculture,” a conference of the Harvard Divinity School.

MEGAN DURNEY coordinates the daily work of the Pfeiffer Center and Duryea Farm, and is an instructor in the Pfeiffer Center’s One-Year Part-Time Training in Biodynamics. A Biodynamic Association board member, Megan has served on the core planning group for the BDA’s national conference, conducted workshops at BDA national conferences, and hosted many young farmer meet-ups. Megan joined the Pfeiffer Center as an intern in 2006 and became a staff member in 2010. In 2014-15, she studied seed saving under Harald Hoven at Raphael Garden in Fair Oaks, CA.

HARALD HOVEN founded and ran Raphael Garden at Rudolf Steiner College (Fair Oaks, CA) from 1987 to 2007. There he trained close to 100 apprentices, created a seed-saving and breeding program, established biodynamic adult education at RSC, and operated a year-round 70-member CSA. Since his retirement from RSC in 2017 he has consulted for, trained, and mentored biodynamic farmers in the US and abroad, focusing on preparation making and biodynamic practices.

KIM PACE manages the Duryea Farm dairy, in addition to supporting all aspects of farm operations at the Pfeiffer Center and Duryea Farm. Kim first met biodynamics while studying under Harald Hoven at Raphael Garden in Fair Oaks, CA. In 2016, Kim stepped away from Waldorf kindergarten teaching to become a full-time apprentice at Raphael Garden, followed by a stint at Fulcrum Farm in Grass Valley, CA, where she helped tend a small herd of Scottish Highland cows.

SHERRY WILDFEUER is the editor of the Stella Natura Biodynamic Planting Calendar, a co-worker at Camphill Village Kimberton Hills, PA, and a long-time active member of the Anthroposophical Society and the Agriculture Section of the School of Spiritual Science.


Unlimited available
Midwinter Ag Intensive 2020$385.00Conference fee includes five meals (Saturday and Sunday dinner, plus lunch on Saturday, Sunday, and Monday).
Unlimited available
Midwinter Ag Intensive 2020 Apprentice Rate$195.00Farm apprentices pay just $195 to attend. You will be asked to provide the name of the farm where you are currently an apprentice before you check out.