Main rules, taken from the EC site:
- Crops are rotated so that on-site resources are used efficiently
- Chemical pesticides, synthetic fertilisers, antibiotics and other substances are severely restricted
- Genetically modified organisms (GMOs) are banned
- On-site resources are put to good use, such as manure for fertiliser or feed produced on the farm
- Disease-resistant plant and animal species adapted to the local environment are used
- Livestock are raised in a free-range, open-air environment and are fed on organic fodder
- Animal husbandry practices are tailored to the various livestock species