Or how to heal using plants
The plants, flowers, leaves and barks are macerated in scalding water then filtered. This highly-concentrated preparation is diluted and then combined with Bordeaux mixture and used within 24 hours.
All of these infusions are based on nettle, the indispensable plant for any biodynamic gardener, and are sprayed from a tractor or by hand in less accessible places, typically once a week.
Here is a list of the plants we use and their principal benefits, although they can also work in combination:
Comfrey: works as an insecticide
Oak: (bark and leaves) acts as a fungicide
Fern: is used as an insecticide
Elder: (flowers and leaves) works as a fungicide an insect repellent
Horsetail: has mineral giving and revitalizing qualities
Tansy: has fungicidal qualities
Yarrow: has fungicidal qualities (especially against powdery mildew)
Lavender: has insecticidal qualities.
Nettles: In infusions to stimulate growth and act as an insect repellent. Encourages photosynthesis and has cryptogrammic properties to combat mildew and powdery mildew.
Rhubarb: Fungicide and insect repellant
Willow:Reinforces the action of nettle