Natural, Organic, and Biodynamic Wine: What's the Difference

These three words get used almost interchangeably in wine shops and on Instagram, but they mean genuinely different things, and only one of them has any legal teeth. Here is what each actually guarantees.

Organic wine: legally certified, rules-based

Organic wine has an actual legal definition, verified by third-party certification bodies. It requires organically grown grapes (no synthetic pesticides, herbicides, or fertilizers), and in the EU, it also regulates winemaking additions, capping sulfite levels lower than conventional wine. In the US, 'organic wine' additionally must contain no added sulfites at all, a stricter bar than the EU's version, which is why the same wine can be labeled differently on each side of the Atlantic.

Biodynamic wine: organic, plus a farming philosophy

Biodynamic farming starts from organic principles and adds a holistic system developed from Rudolf Steiner's ideas: treating the vineyard as a self-sustaining ecosystem, using specific herbal and mineral preparations, and following a planting and cellar calendar tied to lunar and cosmic cycles. Certification (Demeter is the main body) is rigorous and genuinely audited. Skeptics note the astrological calendar has no demonstrated mechanism; supporters point to healthier soil and better fruit as the measurable outcome regardless of why. Both things can be true at once.

Natural wine: a movement, not a legal category

This is the term with zero legal definition anywhere. 'Natural wine' broadly means organically or biodynamically farmed grapes, fermented with wild ambient yeast rather than a selected commercial strain, with minimal to no additions, most notably very low or zero added sulfites, and no fining or filtration. Because there's no certifying body, the term rests entirely on producer honesty and reputation, which is also why natural wine varies wildly in quality and style: it describes a winemaking philosophy of minimal intervention, not a guaranteed outcome.

What this means for what's in your glass

• Organic: Verified farming practices, audited. The safest of the three terms to trust at face value.
• Biodynamic: Verified farming practices plus a distinctive philosophy, also audited by certification.
• Natural: An unregulated, self-applied label. Often overlaps heavily with organic and biodynamic farming, but check the producer, not just the word on the label.

Why low-sulfite wines behave differently

Natural and organic wines, with less SO2 protection, are generally more fragile: shorter shelf life once opened, more sensitive to heat and light in storage, and more prone to unexpected funk or reduction. If you're drinking this style, our open-wine shelf life guide and storage temperature guide matter even more than usual.

For producers pursuing any of these certifications, the audit trail requirement is real and ongoing: every input, every addition (or lack of one), tracked and provable. Oenova's immutable record of every cellar movement is exactly the kind of documentation certifying bodies ask to see. Free plan available.