As recommended in the Saturday Telegraph - Add Water Slices to your hanging bags, hanging baskets and containers to stop them drying out and to reduce the amount of watering needed. Hanging bags and baskets need alot of water and can easily dry out - stop this happening by adding a water slice. Available in packs of 4 or 12.
Water Slices absorb water as you water and retain it longer than compost alone, so less watering for you! Plant roots will penetrate the slice and take out the water. Soak the disc overnight in water and it will dramatically increase in size! Cut the slice in quarters and place evenly in the bag as you fill it with compost. Plant the hanging bags / basket / copntainer up as normal and water.