The Horticultural Alpine Grit has several purposes, from layering paths to breaking up clay soil, marking out seed beds and Alpine plants. The grit can be used to add detail and character to your garden.2-6mm Lime-Free Washed Quartzite GritFeatures and benefits:Ideal for alpines and rock gardensGood for Pot toppersUse for pathways or as bed mulchSuppresses weeds and deters slugsPromotes water drainage for healthy soilHelps to retain moisture in containers