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C-Dar Biodynamic Society




The preparations of biodynamic compost and their application (to sprinklers) are the pillars of this method of agriculture. These preparations contain medicinal herbs that enrich and vitalise the substances of the earth through the fermentation process. These medicinal herbs (or preparations) are inserted into the compost in order to obtain from the fermentation a desired and balanced humus.

These preparations are not fertilisers. Rather they function as agents in the process by which organic matter is transformed into a stable and perfectly balanced humus. Each preparation has a unique role helping plants in absorbing the nutrients they require.

The preparations are denominated according to their mineral or herbal constitution, their numbers are from the number 500 to 508. Preparations 502 & 507 (yarrow, chamomile, nettle, oak bark, dandelion, valerian) are applied to the compound piles in small quantities. The preparation 500 (manure in horn) is applied to the soil to stimulate the growth of the roots of the plants. 501 (Silica in horn) is sprayed to plants to stimulate photosynthesis and metabolisation of the light, to strengthen the plant structure. 508 (Horsetail) is used to prevent and treat with mould occurring due to imbalances in the soil (www.biodynamics.com).

Short description of each preparation:

500 Cow-horn manure. Stimulates the growth of the plant roots.

501 Glass in cow horn. Stimulates photosynthesis and gives strength to plants for the development of its structure.

502 Yarrow. Increases the ability of plants to absorb potassium in a balanced way. It allows the earth to absorb and retain small doses of silicic acid. It also contributes to the formation of high quality proteins in plants.

503 Chamomile. Works with calcium and potash, maintaining the health of the plants. Stabilises the nitrogen contained in the compost and stimulates its growth.

504 Nettle. Helps plants with the absorption of iron. It collaborates with the soil in its adaptation with the plants that grow. Particularly this preparation has a special relationship with the “rhythm”.

505 Oak Bark. Increases the ability of plants to absorb calcium from the soil. When added to the compost provides strength to prevent diseases that could harm the plant.

506 Dandelion. Increases the ability of the plants to absorb silica, and harmonises the relationship with calcium.

507 Valerian. Increases the ability of plants to absorb phosphorus in a balanced way. Provides a small layer of soil and compost protection.

508 Horsetail. Prepared directly from Horsetail (Equisetum Arvense), it is used to prevent fungi (infections caused by fungi). Collaborates with the plant in its relationship with silica.

509 Composed barrel. This is a combination of the 502-507 preparations. The composed barrel can help balance decomposition processes over large areas (such as grazing areas). It reduces the odour of compost, helps in nitrogen retention and other soil components.

Tree Pasta. Collaborates with the trees in their rejuvenation and increases their resistance to the attacks of fungi, insects and other types of conditions like beetles. This preparation is a mixture of albumin, silica, clay and cow dung.

To make orders, or collaborate in the elaboration of these preparations please contact us.


C-Dar Biodynamic’s focus is the study, production and application of biodynamic preparations and composts for restoring and nurturing fields, forests and gardens.”


“C-Dar Biodynamic’s focus is the study, production and application of biodynamic preparations and composts for restoring and nurturing fields, forests and gardens.”