Also called brown gold by gardeners or RCW mulch, ramial chipped wood or RCW is used in agriculture or horticulture. They come from fragmentation by mechanical milling branches (chipped brach-wood). The ramial chipped wood can stimulate biological activity in the soil and are very effective as mulch. By composting, the RCW is transformed into humus. So you can recreate your soil and make it rich in micro-organisms. Living soil is the best way to take care of your garden plants ! It's common practice for Permaculture.
I would like to share to you my technique here: My RCW technique and my board flower bed