The Autumn Mix Flowerbed Gravel 20mm is the ideal Flowerbed mulch. We recommend that you use it with a heavy duty weed membrane underneath. The weed membrane has two functions 1. It prevents weeds from growing. 2. It lets water through to your planted shrubs. Lets face it, who likes weeding? Go on, order your Autumn Mix Flowerbed Gravel 20mm from www.wesellstone.com now!