Vitax Hydrangea Feed Hydrangeas are vigorous growers and require a specific mix of nutrients to produce masses of vibrant, strong blooms. To support growth, Liquid Hydrangea Feed has been formulated to ensure hydrangeas thrive in all types of soils and is especially suited to plants grown in pots or containers, as well as those grown in garden beds. Ideal for use in peat-free composts, free-draining growing media and soil with varying pH Contains potash to encourage abundant blooms Use as a weekly feed during spring and summer for best results