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One of the organisers, Su Hoskin, who is in charge of the organic and biodynamic practices at Domaine-Thomson Wines vineyard near Cromwell, also sits on the association's council.
''The conference was great,'' Mrs Hoskin said.
''The theme was water and light.''
She was particularly pleased to see about half those attending were young people, who were interested in biodynamic principles.
''That was good to see, a great turnout from young people, and quite different from normal.''
The conference started with an introductory workshop at the vineyard on June 21.
''We had 35 people attend that, with another 15 on the waiting list.''
She, fellow organiser Sytze Riemersma, of Cromwell, and Rachel Pomeroy, of Havelock North, talked about biodynamic principles and preparations that formed the core of the philosophy.
The group also made a large compost heap, which was making heat a week later.
The conference was formally opened the following day by Central Otago kaumatua Bill Houia.
Speakers included Ms Pomeroy, who talked about Maori star lore, and the link between biodynamics, crop planting and the stars.
Thea Maria Carlson, the American Biodynamic Association's executive director, and Ian Trousdell, of Sussex, who is the director of The Foundation for Water, were key note speakers.
In addition there was a discussion and workshop by Marinus La Rooij, which looked at preparations.
Delegates also had the option of visiting two properties near Cromwell where owners used biodynamic practices - those of Valda and Otto Muller, of NZ Nuts, who grow various nuts, and Lyn James and Graham Smith, who have a lifestyle block and orchard.
Mrs Hoskin said the association intended to hold another conference in 2020.
However, she planned to step down from the council as she had completed her three-year term.
That meant she would have more time to focus on running workshops and the Otago Biodynamic Discussion Group.
-By Yvonne O'Hara