Jack‘s Hydrangea Blue 7-3-3 1.5#

Contains micronutrients and aluminum sulfate. Enhances blue flowers like lacecap including: blue bird, taube, fasan, mariesii, mophead varieties: nikko blue, all summer beauty, matilda gutges, and merritt's supreme. Unique combination of high quality nutrients as well as acidifying ingredients needed to produce a lush-leafed blue flowering hydrangea. This combined formulation of nutrients and acidic elements, along with the important addition of aluminum sulfate, will help your plants produce deep blue flowers.