nico239 wrote:What is double skin?
Ah like a horticulturalist uses hay?
And you asked him the reason?
"Double skin": these are two tarpaulins one on top of the other ... It seems to me that Eliot Coleman is talking about it.
He had evolved into permaculture, then had discovered a lazy gardener who seemed convincing to him !!!
He continues to make a "sort of" hillock: he digs furrows and pours the earth over the upper part, without digging it, without burying any MO ... I call that ridges. And he puts hay.