• Hydrangea Blue tub
      • Hydrangea Blue
      • Jack's Classic
      • |
      • 7-3-3

        Enhances blue flowers.

        Unlike other blue enhancers, we have kept the standards you have come to trust in the Peters name. We have designed this unique formula to not just to keep your hydrangeas blue BUT to provide them with the nutrients they need for strong growth and well-being.

      • Product Information
      • For use with:
        • Lacecap including: Blue Bird, Taube, Fasan, Mariesii
        • Mophead varieties: Nikko Blue, All Summer Beauty, Matilda Gutges, Merritt’s Supreme
    • Guaranteed Analysis


      Total Nitrogen (N) 7%
      7% Ammoniacal Nitrogen
      Available Phosphate (P2O5) 3%
      Soluble Potash (K2O) 3%
      Magnesium (Mg) 0.50%
      0.50% water soluble magnesium (Mg)
      Sulfur (S) 9%
      Boron (B) 0.02%
      Copper (Cu) 0.05%
      0.05% Chelated Copper (Cu)
      Iron (Fe) 0.30%
      0.30% Chelated Iron (Fe)
      Manganese (Mn) 0.05%
      0.05% Chelated Manganese (Mn)
      Molybdenum (Mo) 0.0009%
      Zinc (Zn) 0.05%
      0.05% Chelated Zinc (Zn)
    • Blue Hydrangea

      What The Numbers Mean


      • Formulated to prevent the build up of harmful salts while delivering additional potassium, magnesium, sulfur, and micro nutrients.


      Fertilizer Analysis



      Product Number


      #59325 - California


      Container Type

      Containers 1.5 lb. Plastic Tub


      All Jack's Classic products come with a free measuring spoon for precise and accurate product application as well as detailed instruction in each container.