Mulching, what is it? Mulching is simply applying a layer of well rotted manure, composted bark/straw or good quality garden compost around the base of your roses. There’s lots of benefits to mulching! It helps retain moisture, suppresses weeds and replenishes nutrients and soil structure, all contributing to happier roses. #rosecare #davidaustinroses #mulching #gardenroses #englishroses | David Austin Roses