The life behind the Josephine Porter Institute
Josephine Snyder Porter (1916–1984)
The Farm, the Preparations, the Soil, and a Life of Service
A biographical profile prepared for the Josephine Porter Institute for Applied Biodynamics in August of 2026.

“I have found it - the Bio-Dynamic method of farming and gardening.”
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A Life in Dates
Date
Life and work
February 28, 1916
Born Josephine Snyder on the family farm in Cherry Valley, near Stroudsburg, Pennsylvania. The contemporary 1984 memorial supplies the exact date. (Bio-Dynamics no. 152, Fall 1984, p. 76.)
1932
Graduated from Stroudsburg High School shortly after turning sixteen, having skipped two grades at the one-room Cherry Valley school. (Applied Biodynamics no. 4, Summer 1993, p. 1.)
1934–1936
Attended Blackburn College in Carlinville, Illinois, from 1934 to 1936 and graduated in 1936 from its two-year liberal-arts program. She also worked the family milk route and developed her interest in nutrition and medicine. (Applied Biodynamics no. 4, Summer 1993, p. 1; Abigail Porter oral history, March 20, 2024, pp. 2–4; Abigail Porter, written clarifications, 2026.)
April 1946
Wrote to her sister after having “just” returned from her first biodynamic conference in Spring Valley, declaring, “I have found it” and describing healthy soil as the foundation of healthy plants, animals, and people. (Bio-Dynamics no. 152, Fall 1984, p. 78; Abigail Porter, written clarifications, 2026.)
1947
A Spring Valley group photograph documents her continued participation. Evelyn Speiden, later Evelyn Speiden Gregg, provided the clearest documented practical apprenticeship; Pfeiffer also visited the Snyder farm and consulted directly with Porter. (Bio-Dynamics no. 152, Fall 1984, pp. 78–79; Abigail Porter, written clarifications, 2026.)
August 1953
Married Harris Porter in August 1953. Their daughter, Abigail, was born in September 1954. The couple first met at a biodynamic conference, either Josephine’s first conference in 1946 or another gathering later in the decade. (Abigail Porter oral history, pp. 3–5; Abigail Porter, written clarifications, 2026.)
c. 1955–1956
After assisting Gregg for one or two years, Porter assumed primary responsibility for making the preparations around 1955. Distribution and the secretary-treasurer role followed in 1956, when the Porters moved into the Gregg house in Chester, New York, while Gregg was in India.Porter continued making some preparations at the Snyder farm in Pennsylvania. (Bio-Dynamics no. 152, Fall 1984, pp. 78–80; Applied Biodynamics no. 31, Winter 2000–2001, p. 4; Abigail Porter, written clarifications, 2026.)
1956–early 1960s
From the Stroudsburg farm, Porter moved to the Gregg house in Chester, New York from 1956 to 1958, and then afterwards moved to Dover Plains, NY. In 1964 she returned to the family farm in Stroudsburg, all while conducting Association work and preparation distribution. Maintained direct contact with Pfeiffer and the Pfeiffer Foundation. (Abigail Porter oral history, pp. 4–8; Abigail Porter, written clarifications, 2026.)
1961
Pfeiffer died. Porter continued the national preparation service and supplied preparations used in Pfeiffer Foundation products. (Abigail Porter oral history, pp. 7–8.)
1964
Returned to the Pennsylvania family farm in spring 1964 as her marriage ended. Expanded the goat dairy and other enterprises while raising her daughter and caring for her father. (Applied Biodynamics no. 4, Summer 1993, p. 1; Abigail Porter oral history, pp. 8–10; Abigail Porter, written clarifications, 2026.)
c. 1972–1973
Association employment ended after a request for a modest raise was declined, and her work was divided among volunteers. Her daughter remembers BDA records and supplies being removed from the farm in late 1972 or 1973. Porter continued preparation work independently. (Applied Biodynamics no. 31, Winter 2000–2001, pp. 4–5; Abigail Porter oral history, pp. 8–9; Abigail Porter, written clarifications, 2026.)
1972 onward
Hosted students and young workers from programs that included Antioch and Goddard. James Silverthorne began farm work in 1972, making hay and carrying out other field work. (Applied Biodynamics no. 4, Summer 1993, p. 1; James Silverthorne oral history, January 29, 2024, pp. 2–12.)
August 1976
At the August 1976 Association meeting, Hugh Courtney recalled Porter saying that she would be “happy to teach anyone who wanted to learn how to make the preparations.” Courtney wrote that he was “the only individual who actually showed up at Josephine’s farm that fall to learn about the preparations.” A later remembrance dates his apprenticeship from fall 1976 through fall 1983, with phone consultations between visits. (Applied Biodynamics no. 31, Winter 2000–2001, pp. 4–6; no. 98, Fall 2020/Winter 2021, p. 6.)
1981–1984
Porter experienced serious illness but continued preparation work, correspondence, and farm work as her strength allowed. She milked the goats twice a day except when she went to the hospital in 1982 and again in 1984. (Bio-Dynamics no. 152, Fall 1984, p. 76; Abigail Porter oral history, pp. 13–15.)
1982–1985
Research scientists Goldstein, Koepf, and Koopmans report: “A field experiment compared conventional, organic and biodynamic management between 1982 and 1985” near Pullman, Washington. They also state: “All biodynamic preparations were obtained from Josephine Porter (Stroudsburg, PA).” Their methods report sampling of winter-wheat plots in 1985, confirming that the experiment continued after Porter’s death. (Goldstein, Koepf, and Koopmans 2019, pp. 189–190.)
May 3, 1984
Porter died at home on the morning of May 3 after a two-week hospitalization and an overnight coma. She was surrounded by her daughter, two sisters, and two farm helpers. Abigail explains that May 4 entered later accounts as her death date through an error spoken at the funeral. (Bio-Dynamics no. 152, Fall 1984, p. 76; Abigail Porter, written clarifications, 2026.)
October 22, 1985
JPI was chartered to continue preparation work and education in her honor. (Applied Biodynamics no. 31, Winter 2000–2001, p. 4; JPI, “About”.)
1992
JPI began publishing Applied Biodynamics, creating the body of literature that preserves much of the Porter–Courtney lineage. (JPI, “About”.)
2007
Josie Porter Farm began operating on part of the historic Snyder property, now protected as municipal open space, giving her agricultural legacy a continuing local presence. (Josie Porter Farm, “About Us”.)
Published and Public Sources
Page references below are to the printed issue or transcript pagination where available.
Core periodical sources
- “Josephine Porter—Master of Her Craft,” Bio-Dynamics no. 152 (Fall 1984), pp. 76–81. Contemporary composite memorial with contributions by Joel Morrow, Hugh Courtney, Evelyn Speiden Gregg, Helen Philbrick, Jim Barausky, and Kate Shelley Du Vivier. Bio-Dynamics journal archive and issue record.
- Candace Coffin, “Josephine Porter—A Biodynamic Pioneer,” Applied Biodynamics no. 4 (Summer 1993), p. 1. Issue PDF.
- “Valerian Preparation,” Applied Biodynamics no. 29/30 (Spring/Fall 2000), pp. 8–10.
- Hugh J. Courtney, “The Michaelmas 2000 Impulse,” Applied Biodynamics no. 31 (Winter 2000–2001), pp. 4–7.
- Interview with Joe Francis, Applied Biodynamics no. 40 (Spring 2003), p. 5.
- Interview with Heinz Grotzke, Applied Biodynamics no. 41 (Summer 2003), pp. 7–9.
- Hugh J. Courtney, discussion of Pfeiffer farm surveys, Applied Biodynamics no. 63 (Winter 2008–2009), p. 1.
- “Revealing Hidden Forces of Equisetum arvense,” Applied Biodynamics no. 68 (Spring 2010), pp. 1, 4.
- Porter–Courtney–JPI historical remembrances, Applied Biodynamics no. 98 (Fall 2020/Winter 2021), pp. 5–9.
Issues other than no. 4 can be located through JPI’s Applied Biodynamics back-issue archive.
Firsthand accounts and oral histories
- Abigail Porter, interview by Anneliese Abbott, March 20, 2024, History of Organic and Sustainable Agriculture. Public transcript. Supplemented by Abigail Porter, written clarifications to this profile, 2026.
- James Silverthorne, interview by Anneliese Abbot, January 29, 2024, History of Organic and Sustainable Agriculture. Public transcript.
Institutional and land-history sources
- Josephine Porter Institute, “About Josephine Porter”, “Our History”, and “About”.
- Biodynamic Association, “Hugh Courtney” and “Passing It On: Hugh Courtney’s Preparation-Making Workshops”.
- Josie Porter Farm, “About Us”.
Scholarly context
- Walter A. Goldstein, Herbert H. Koepf, and Chris J. Koopmans, “Biodynamic Preparations, Greater Root Growth and Health, Stress Resistance, and Soil Organic Matter Increases Are Linked,” Open Agriculture 4 (2019): 187–202. Article PDF; DOI.
- Dan McKanan, Eco-Alchemy: Anthroposophy and the History and Future of Environmentalism (University of California Press, 2017), especially pp. 64, 82–83. McKanan interprets Porter as an important native-born American bridge between biodynamics and the wider environmental movement. His statement that JPI was established in 1992 appears to conflate JPI’s 1985 founding with the 1992 launch of Applied Biodynamics. Publisher record and DOI.