Ramial chipped wood (RCW), also called BRF (from the French name, bois raméal fragmenté) refers to the wood chips made from small to medium-sized green branches up to 7 cm in diameter, chopped up with their leaves. RCW is high in nutrients, an excellent “soil builder,” promotes the growth of soil fungi and activates the biological life of the soil. During the decomposition process, RCW releases more nutrients than regular wood chips or conifer mulch. The ensuing nutrient-rich humus is excellent for improving soil structure. As with all mulches, it is very effective in suppressing weeds, for conserving soil moisture and for promoting rainwater penetration.