Lunar & cosmic calendar for wine expression & quality
The contribution, measured
Time horizon: Ongoing
How it contributes
It is the component growers most associate with wine expression, by aligning tastings and work with fruit days.
What to measure for this pairing
Why this goal matters
Many growers adopt biodynamics for the expression they attribute to the wines: greater aromatic clarity, energy and sense of terroir. It is the most cited motivation among top estates that have taken up the practice.
These qualities are, by nature, sensory and hard to quantify. What can be managed and documented is the programme — silica preparations, calendar work, cellar choices — and its relationship to tastings and analyses over time.
Goal indicators
Market & certification: Wine expression is the main commercial argument of top biodynamic viticulture.
How to apply the practice
- 1Check the calendar for the day type and sap phase.
- 2Align preparations and work with the appropriate day.
- 3Favour fruit days for tastings and certain operations.
- 4Log the dates to evaluate over time.
Frequently asked
Does the biodynamic calendar have a scientific basis?
The effects attributed to lunar/cosmic rhythms are debated and not scientifically settled. Many growers use it as a planning discipline and associate it with better tastings; Demeter certification values working the calendar.
Do I need to follow the calendar for everything?
In practice you prioritise applying the preparations and certain operations and tastings; weather and agronomic conditions always come first.
Same practice, other goals
Same goal, other practices — Wine
How GrapeFlow helps
The proof Demeter certification demands — logged by plot and date.
Biodynamic calendar
Root, leaf, flower and fruit days and the lunar phases in GrapeFlow, to plan preparation applications and work in step with the calendar.
Electronic field notebook
All operations — compost, cover, animals, dynamisation — logged by plot, ready for certification.
Tasting notes & analyses
Per-lot tastings and analyses over time, to relate the biodynamic programme to how the wine evolves.