Ahmed wrote:I was asking myself the same question, because your formulation, Peasant-bio, was quite elliptical ...
Layering, aerial or not * is a good means of vegetative propagation; usually, we mainly talk about grafting, in terms of fruit trees.
In the case of air layering, it is necessary to maintain a pocket of moist substrate, generally sphagnum, by wrapping it with a sheet of waterproof plastic. A little cutting hormone (synthetic or natural) helps things and increases the root volume.
It is precisely because we often only talk about grafting for fruit trees that I put forward air layering, which seems to me a much more valid technique for gardeners.
for the substrate, I use potting soil that I moisten to form a kind of elongated sphere.
I break it in half and I glue it around the barked stalk.
I cover with a transparent plastic sheet attached at the top and bottom with string.
to bark, I make two transverse cuts of the bark spaced 4-5 cm apart.
I remove all the bark between these two cuts.
I scrape the wood a little to remove the outer layer.
this is where the small rootlets will form which we will see thanks to the transparent plastic.