• Jack's Classic Blossom Booster

      • Blossom Booster
      • Jack's Classic
      • |
      • 10-30-20

        Professional formula for more flowers and brighter colors on all indoor and outdoor plants. Feeds through both the roots and the leaves.


        • "
        • We developed this formula over 40 years ago for the professional Orchid Grower to help his plants set abundant buds that matured fully into vibrant, beautiful and colorful flowers. The 1-3-2 ratio is still the ratio that is preferred by professional growers when they want results. This formula also contains a higher level of magnesium, a vital secondary element, which helps keep leaves green."


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      • Product Information
      • For use with:
        • Geraniums
        • Impatiens
        • Begonias
        • Marigolds
      • Also for all indoor and outdoor flowering plants
    • Guaranteed Analysis


      Total Nitrogen (N) 10%
      5% Ammoniacal Nitrogen
      5% Nitrate Nitrogen
      Available Phosphate (P2O5) 30%
      Soluble Potash (K2O) 20%
      Magnesium (Mg) 0.50%
      0.50% Water Soluble Magnesium (Mg)
      Boron (B) 0.02%
      Copper (Cu) 0.05%
      0.05% Chelated Copper (Cu)
      Iron (Fe) 0.10%
      0.10% 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)
    • What the Numbers Mean

      In Blossom Booster 10-30-20, the first number is for Nitrogen. This product contains 10% Nitrogen. The second number is for Phosphate. This product contains 30% Phosphorus as P2O5. The third number is for Potash. This product contains 20% Potassium as K2O. These three elements: Nitrogen, Phosphorus and Potassium are the major elements in any plant food.

      • Proven 1:3:2 ratio stimulates the plant to set more flowers while holding color brighter and longer than any other home blooming formula.
      • Can be used on a variety of plant material to encourage and enhance blooming.
      • Promotes excellent root growth when used as a transplant solution.
      • Fully chelated trace elements.

      Manganese, Iron, Copper, Boron, Zinc and Molybdenum are the trace or micronutrients. All Jack's Classic® products contain these trace elements. Although they are present in small amounts, they are just as important as the major and minor elements in plant growth..

      • Feeds through the roots and leaves.
      • The guaranteed analysis on each package of fertilizer tells you how much is in each product. Jack's Classic products contain these elements in a highly soluble form, which means they will go completely into solution in water. When applied to your plants, they will be absorbed and utilized to make your plants grow to their fullest potential.


      Fertilizer Analysis



      geraium pot

      Container Type and Sizes

      Plastic tub, 8 oz., 1.5 lbs., 4 lbs.

      Plastic resealable bag with handle: 10lbs.


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