Is a peat-free mixture a suitable soil improver instead of garden compost?
Stefan says: I’m pleased you’re using a peat-free mixture, although a bit puzzled by what it might be. You say the bags do not ‘show the timber proportion or if it is aged’ and the brand is ‘finely sieved and easy to handle’, and it says there is some added nutrient.
I might add I had a lengthy exchange with the manufacturers of some John Innes No 2 compost that I bought last year because it was so unlike any that I’d seen before and I thought it was just sieved soil. They assured me the composition had altered somewhat but still satisfied the John Innes guidelines.
But back to yours, whatever it is, and the short answer is no, I’m afraid. To improve your soil structure, you really need something much more organic, such as well-made garden compost, well-rotted manure or some (costly) bags of a proprietary product that contains no soil.