Here is the title of my new bedside book, "Caring for the garden with plants » (Philippe Delwiche, ed. Nature and Progress)
It is true that the experiments carried out on the possibilities of treating plants with other plants, by liquid manure, macerations or other decoctions, are more a matter of observation than of scientific explanation. Though. By poking around in different libraries, I found that, around the world, many people have looked into these sometimes ancestral practices. Some case studies go so far as to list the different substances contained in plants, highlighting the active principles. Nevertheless, you have to dig to find information on the subject.
In recent years, there has been a proliferation of works and gardeners practicing gardening that respects the environment and therefore our health for all.
Even if there may still be controversy over the doses and times of application of herbal preparations, it is clear that it is now easy to obtain the preparations, even the procedure to follow to harvest the plants and use them for the manufacture of these phytosanitary preparations.
It is obvious that the application of herbal preparation is part of a cultural reasoning. In addition, these preparations, sometimes used in watering, sometimes in spraying, are considered as fertilizers, elicitors, capable of reinforcing the natural defenses of plants. We don't "treat" the plants, we do everything to keep them healthy, which is different in the approach of cultural reasoning.
There are therefore essential plants in the garden if they are not found, wild, in the nearby environment.
"Treating the garden with plants" (Philippe Delwiche, ed. Nature et Progrès) is a book to put in all the hands of gardeners, and why not, in the libraries of all agricultural training centers, which could add to the training of young people, field study of herbal preparations in total substitution of chemical pesticides.
I am obviously very interested in the results that you will kindly communicate to me...
And just because we don't explain something doesn't mean it doesn't exist.