Gro-Sure perlite improves aeration and drainage for healthy root growth and is therefore ideal for use when rooting cuttings and potting-onStimulates strong healthy root growthHelps increase absorption & water retentionImproves aeration and drainageNaturally occurring lightweight materialCan be added to seed & cutting compost for additional benefitsGro-Sure Perlite is a naturally occurring volcanic rock which has been heated to high temperatures to produce lightweight, micro-porous granules. This is perfect for improving aeration, moisture retention and drainage, encouraging strong, healthy seedling growth and establishment.How to Use: For harder cuttings and for fragile plants increase to two parts Perlite and one part Gro-Sure Seed & Cutting Compost. Keep well watered, but ensure pots can freely drain. We recommend dampening the Perlite before use, to reduce dust. When using the whole bag contents, add up to 1 litre (2 pints) of water in the bag and leave to soak for several minutes