Orgasyl from Frayssinet Nutrition is an organic plantation soil specifically designed for cuttings. Hormone rooting powder is forbidden in organic agriculture for a number of reasons, primarily it is made up of synthetic auxins, natural auxins are what plants produce to grow roots, it also often contains a fungicide to prevent ‘damping off’.. Some manufacturers of hormone rooting powder advise that it shouldn’t be used on vegetable plants- so even if you are not organic my advice is to avoid using it.
There are a number of natural solutions can be used instead of hormone rooting powder, see Three Organic Alternatives to Hormone Rooting Powder.
We have had great results using Orgasyl, through it can be a bit woody which means it is better in larger pots rather than seedling trays. The plants once they had started rooting like to be replanted into individual pots full of a rich plantation soil.
The other advantage we have found with Orgasyl is that is has a high water retention value, very helpful with our sun and winds.
Orgasyl is produced by the French company Frayssinet Nutrion I buy it from our local agricultural suppliers in Tuchan, it is half the price buying it from a professionel supplier than going anywhere near a garden centre- 15 euros approx for a 70l bag as opposed to 30 odd euros from the likes of GammVert.