Water-retaining granules can be added to growing medium to increase its ability to retain water for longer periods of time. They may help reduce the demand of frequent watering during dry spells and are particularly handy in hanging baskets and containers, and where coarse-textured free-draining potting media is used.
Only use recommended amounts
Ensure it is stored as advised
Wash hands after use
The Royal Horticultural Society is the UK’s leading gardening charity. We aim to enrich everyone’s life through plants, and make the UK a greener and more beautiful place.