free P & P On Two 25 Litre Bags*give 4 12in (30cm) Containers The Compost They Require To Grow Thriving Rhododendrons & Azaleas In Pots As Well As Crops Like Blueberries & Cranberries.gro-sure Ericaceous Compost Is Rich In The Nutrients That Acid-loving Plants Like So You’ll Have Peace Of Mind That Your Potted Soft Fruit, Rhododendrons & Azaleas Will Produce An Abundance Of Lovely Flowers & Fruit & The Leaves Will Have A Glossy Glow From The Extra Iron Within The Compost.use In Pots Or Sprinkle Over Beds Around Acid-loving Ornamentals Like Rhododendrons & Azaleas To Provide An Effective Soil-warming Mulch.*postage Charges Apply On Three Bags Or More.