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Biodynamics in wine isn’t new. Doing it properly is.
Quartz Reef is part of a very small group of New Zealand wine estates that are both Demeter-certified biodynamic and BioGro-certified organic.
Across the country, only around10% of wineries hold any form of organic certification at all, and biodynamic Demeter certification sits within that as an even smaller subset. In Central Otago, only a handful of vineyards combinefull Demeter biodynamic certification with organic certification – Quartz Reef among them.
We farm a single, contiguous estate on Bendigo Station, certified Demeter biodynamic since 2011 after a four-year conversion and audit process. Every bottle of Quartz Reef is grown in this one living system.
New Zealand has four main recognised organic certifiers for wine and agriculture: BioGro, AsureQuality, Demeter (for biodynamic production), and Organic Farm New Zealand. Quartz Reef carries two of those logos:
Demeter New Zealand – biodynamic certification for the vineyard
BioGro – organic certification for vineyard and production
Certification means:
Independent audits of our soils, sprays, inputs and records
No synthetic herbicides, pesticides or systemic fertilisers
Vineyard and winery practices documented, inspected and verified
Compliance checked every year, not just once
It turns “we farm gently” from a nice story into an evidence-based claim.
Central Otago is already an extreme place to grow vines: high UV, cold nights, hot summer days, low rainfall, continental climate. Instead of using chemistry to push the vines through that stress, biodynamics asks a different question:
How do we make thesoil more alive, so the vines can do more of the work themselves?
For us, biodynamics in Bendigo is about:
Deep root systems chasing water and minerals through quartz-rich schist and clay
Vines that can ride out hot summers and cold nights without collapsing
Grapes that arrive in the winery with natural balance rather than requiring correction
Central Otago is unforgiving. Biodynamics is our way of working with that, not against it.
In practice, farming biodynamically at Quartz Reef means:
No synthetic herbicides or systemic fungicides – weed and disease management is physical, biological and timing-based
Compost & preparations – we build compost from marc, straw and manure, then use biodynamic preparations such as 500 and 501 to stimulate soil life and photosynthesis
Cover crops & diversity – mixed species between rows to feed soil microbes, attract beneficial insects and prevent erosion
Lunar and seasonal rhythm – key operations (pruning, spraying, cultivation) are timed with lunar and planetary cycles as guidance, not superstition
Hand work where it matters – canopy work, bunch thinning and harvest are done when the vines tell us, not when machinery is free
Demeter certification audits this entire system on site — not just our spray diary, but how we think and plan around the vineyard.
If Demeter is the depth, BioGro is the clarity.
BioGro is New Zealand’s largest organic certifier and provides internationally recognised organic certification for wine. Being BioGro-certified organic on top of Demeter means:
Input lists and traceability are checked against strict organic standards
Wines can be exported and recognised as organic in key markets
Customers, sommeliers and importers can trust the logo
For you, the drinker, “Demeter + BioGro” on the label means no shortcuts, no half-measures, and no “we’re basically organic” fuzziness.
Good biodynamic farming should be invisible in the wine. What you feel is place.
In our wines, that shows as:
Pinot Noir – more precise fruit, finer tannin lines, and a strong sense of vintage character rather than a house recipe
Méthode Traditionnelle – high natural acidity, clean ferments, and a tension that holds through extended lees ageing
White wines – clarity of aromatics, mineral edges, and texture built from lees and time, not additives
Because the vineyard is healthier and the fruit comes in balanced, the winery work can stay minimal. Less adjustment, more translation.
Only asmall fraction of New Zealand wineries are certified organic at all
A smaller subset again arecertified biodynamic by Demeter
In Central Otago, only a handful of estates combine full Demeter biodynamic and BioGro organic certification on contiguous vineyards – Quartz Reef among them.
Within sparkling, Quartz Reef is recognised as New Zealand’s largest premium producer of hand-crafted organic and biodynamic Méthode Traditionnelle, all sourced from this Demeter-certified estate in Bendigo.
Every year, independent inspectors:
Walk the blocks
Check compost and preparations
Review spray and input records
Cross-check production against certification standards
Demeter and BioGro certification can be removed if the system slips. There’s accountability built in.
For trade, media and collectors, this gives a simple assurance: the farming claims behind Quartz Reef are documented, inspected and ongoing, not a one-time announcement from a past vintage.
At the cellar door and on vineyard visits, you’ll see:
Cover crops underfoot
Compost heaps in various stages of life
Vines that look balanced, not forced
Méthode bottles ageing quietly a few metres away from where the grapes once grew
Biodynamics here isn’t something you read about on a signboard. It’s visible in the way the place feels and functions — and then, later, in the way the wines age.
For us, Demeter biodynamic and BioGro organic certification are not the end goal. They’re the framework that keeps us honest as we try to translate a very particular piece of Bendigo into wine.
In a New Zealand context where certified organic winegrowers are still the minority, and fully Demeter-certified biodynamic vineyards are rarer again, Quartz Reef sits as one of the estates choosing the narrow path on purpose.
The result should not just be wines that taste good.
It should be wines that could not have come from anywhere else.
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