Westland Hydrangea Colourant uses a combination of iron and aluminium salts to acidify soil and change the colour of your pink hydrangeas into blue varieties. Sold in a 500g can.

At the Oxford Garden Centre we are very proud of our ability to offer fast, free local delivery with our own fleet of vehicles and skilled delivery drivers. Free delivery applies to OX postcodes only with no minimum order! For customers outside our free delivery area, we offer a click and collect service from our store.