Our staff is a small but dedicated group of farmers, writers and educators, complemented by contributors from all over the world.

Kai Lange is a farmer, grower and teacher and is coordinating the BDAC work based training and quality assurance. He has been involved in biodynamic education since 1985 starting in Germany. He aims to inspire people’s love for land work and believes that biodynamic practice is the most wholistic and works well alongside all agroecology movements. 

Nir Halfon is passionate about education and training people in biodynamic and regenerative farming and gardening. He has been involved with the Biodynamic Agricultural College since 2009 as a teacher, administrator and since 2016 as a trustee. Until recently he was a grower at Plawhatch Farm and currently works at Plumpton College as a program manager.

Alysoun Bolger – Online course development and instructor

Jonathan Code – Writer and teacher

Richard Thorton Smith – Writer


Abby Rose, a farmer and soil health advocate, was named one of 50 New Radicals by The Guardian and Nesta in 2018 for her work in Vidacycle Tech developing simple apps that help build ecology, profitability and beauty on farms around the world. In 2015 Abby co-founded the award-winning podcast Farmerama Radio. Based in London, Abby splits her time between working on her family farm, Vidacycle, in Chile, and visiting farms on multiple continents learning from soils and understanding what it’s going to take to build a more ecological farming future. 

Laurence Smith is a Lecturer at the Royal Agricultural University where he is contributing to module development and teaching. His research is focused on the development and application of sustainability assessment tools and farm-system modelling. 


Mark Addington – Trustee

Jenni Rosenbrock – Trustee