Cutting Edge Solutions · Product Information
Uncle John's Blend SP™ 4-0-27
Uncle John’s Blend SP™ 4-0-27 combines essential trace micronutrients such as Manganese (Mn), Zinc (Zn), Iron (Fe), and Sulfur (S) along with the essential primary nutrient Potassium (K) to enhance the genetic potential of plants.
Uncle John’s Blend SP™ 4-0-27 is the Soluble Powder(SP) version of the original liquid Uncle John’s Blend. Uncle John’s SP™ 4-0-27 is recommended as a supplement in all stages of plant growth, but is most critical in the flowering stage for nutrient mobilization and metabolism.
Uncle John’s Blend SP™ 4-0-27 is versatile enough for all types of fertigation systems, including drip irrigation and recirculating hydroponics. It also proves effective as a foliar spray during the vegetative and transition growth phases. Designed to integrate smoothly with all commercial nutrient programs, Uncle John’s Blend™ SP 4-0-27 ensures comprehensive compatibility and ease of use.
Guaranteed Analysis
Soluble Potash (K20) . . . . . . . . . . . . . . . . . 27.0%
Sulfur (S) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9.5%
9.5% Combined Sulfur (S)
Iron (Fe) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.47%
0.47% Chelated Iron (Fe)
Manganese (Mn) . . . . . . . . . . . . . . . . . . . . . . 3.9%
3.9% Chelated Manganese (Mn)
Zinc (Zn) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.49%
0.49% Chelated Zinc (Zn)
Derived from: Potassium Sulfate, Manganese Sulfate, Zinc Sulfate, Ferrous Sulfate, Citric Acid (chelating
agent), and Soy Protein Hydrolysate.
Directions for Use
For Reservoir Feeding
Mix 0.79 grams of Uncle John’s Blend™ SP per gallon of water.
For Stock Tank Mixing
Mix 300 grams per gallon of RO water, stir until powder dissolves. Dose at 1:375 ratio or 0.26%.
Vegetative and Flower Mixing Chart
Note: For injection and reservoir mixes BLOOM A™ should always be mixed FIRST.
Liquid Concentrate Instructions
Uncle John’s Blend SP™ can be mixed at 300 grams per 1 gallon of Reverse Osmosis or Distilled water. Uncle John’s Blend SP™ concentrated liquids are to be mixed until fully dissolved. Once fully dissolved, the mixture rate for the Uncle John’s Blend liquid concentrate is 10 mL per Gallon of water. It is important to agitate before each use, and use within one week. Store concentrated liquid in a cool, dark place.
