improves Drainage & Opens Up Structuredecorative Finish For Pots, Containers & Rockeriesadds Weight To Pots & Containersideal For Anchoring Aquatic Plantstake Advantage Of Westland Potting Grit; Ideal For Mixing With Compost To Enhance Drainage. Potting Grit Opens Up The Structure Of The Compost & Creates Essential Air Pockets Around The Plant Roots.its Clean, Uniform Appearance Makes It An Ideal Choice For Creating A Decorative Finish For Pots, Containers, Rockeries, Around Ponds, In Aquariums & Also For Alpine Landscapes.its A Great Aid For You The Propagator Too, Making An Excellent, Free-draining Base For Potted Plants. we Recommend You Mix With A Multi-purpose Compost To Enhance Drainage For Plants That Will Not Tolerate Water Logging. Ideal For Alpine Plants, Ornamental Succulents & Cacti.for Orders Of 3 Bags Or More Additional Delivery Charges Will apply.