BioDynamic Calendar

Planting by the moon — aligning farm activities with cosmic rhythms

What is the BioDynamic Calendar?

The biodynamic calendar is a planting guide based on the movement of the Moon through the twelve zodiac constellations. Each constellation is associated with one of the four classical elements — Earth, Water, Fire, and Air — which correspond to the four parts of a plant: Root, Leaf, Fruit/Seed, and Flower.

By timing farm activities to align with these cosmic rhythms, biodynamic farmers achieve better germination rates, stronger plants, improved flavour, and longer shelf life — all without any additional chemical input.

Key Principle: The Moon's position in the zodiac influences which part of the plant is most active on any given day. Planting on the right day amplifies nature's own forces.
Biodynamic Calendar

Four Crop Types & Best Days

Crop Type Element Moon in Constellation Best Activity Examples
🌱 Root Days Earth Taurus, Virgo, Capricorn Sow, transplant, harvest root crops Carrot, Radish, Beetroot, Potato, Turmeric
🌿 Leaf Days Water Cancer, Scorpio, Pisces Sow, water, harvest leafy crops Spinach, Cabbage, Lettuce, Coriander, Curry Leaf
🌸 Flower Days Air Gemini, Libra, Aquarius Sow flowers; harvest for aroma and colour Jasmine, Rose, Marigold, Sunflower
🍅 Fruit/Seed Days Fire Aries, Leo, Sagittarius Sow, harvest fruit and seed crops Tomato, Brinjal, Chilli, Mango, Paddy, Groundnut

Lunar Phase Guidelines

🌑
New Moon

Rest period. Avoid sowing. Good for soil preparation and applying BD 500 Horn Manure.

🌒
Waxing Moon

Sap rises. Best for sowing above-ground crops, transplanting, and applying BD 501 Horn Silica.

🌕
Full Moon

Peak energy. Harvest for best flavour and storage. Apply CPP and compost preparations.

🌘
Waning Moon

Energy descends. Best for sowing root crops, pruning, weeding, and applying BD 500.

TNBDA
Sri T. Navaneethakrishnan

Founding President, TNBDA
Pioneer of Tamil BD Calendar

Tamil BioDynamic Calendar

The Tamil BioDynamic Calendar is a landmark contribution to Indian biodynamic farming — developed by Sri T. Navaneethakrishnan Aiya, Founding President of the TamilNadu BioDynamic Association.

Recognising that most Tamil Nadu farmers are more comfortable in their native language, Sri Navaneethakrishnan has simplified and adapted the international biodynamic calendar into Tamil, aligning it with the traditional Tamil Panchangam (almanac) system. This makes the calendar intuitive and accessible to every Tamil-speaking farmer.

Key Features of the Tamil BD Calendar
Tamil Month Integration

Aligned with Tamil months (Chithirai to Panguni) and traditional Nakshatras for easy cross-reference with existing farmer knowledge.

South Indian Crop Calendar

Optimised for Tamil Nadu's two main cropping seasons — Kharif (Kuruvai/Samba) and Rabi — with specific guidance for paddy, sugarcane, banana, and vegetables.

Local Climate Adaptation

Accounts for Tamil Nadu's unique monsoon patterns (Northeast and Southwest), temperature ranges, and regional soil types.

Preparation Timing Guide

Includes specific guidance on when to apply BD 500, BD 501, CPP, and compost preparations based on Tamil lunar calendar dates.

Available in Tamil

Fully written in Tamil script — breaking the English language barrier that has long prevented Tamil farmers from accessing biodynamic knowledge.