Westland Ericaceous High Performance Liquid Plant Food provides all the essential nutrients ericaceous plants need to flourish. So whether your ericaceous plants are in containers or in the ground, you should feed them weekly. This will help to prevent disease and promote an abundance of stronger, healthier, and more vibrant flowers. Ideal for acid-loving plants, including rhododendrons and azaleas, as well as camellias and blueberries. The formula is enriched with seaweed to strengthen plants from the inside, and it contains high potassium for longer-lasting blooms and magnesium for greener and glossier foliage. It also provides an essential iron source to help nourish plants. Available in a 1L size, this plant food comes in a blue container.