Jack’s All Purpose 20-20-20 8oz


  • Great for maintaining plants in garden center and growing facilities
  • Great for foliage, root, and shoot growth.
  • Nitrogen 20%
  • Phosphate 20%
  • Potassium 20%
  • For: All outdoor grown plants.

4 in stock (can be backordered)


Jack’s All Purpose 20-20-20

Jack’s All Purpose 20-20-20 is great for maintaining plants in garden center and growing facilities. It provides fast green-up and foliage expansion due to the high percentage of ammonium and urea nitrogen. In addition, the balanced phosphorus and potassium is excellent for root and shoot growth.

Jack’s All Purpose 20-20-20 is a balanced formula applicable to a variety of growing material. Specfically, its 1:1:1 nutrient ratio makes it good for almost any stage of plant growth. Additionally, the design of the formula uses nutrients that provide strength to the plant, as well as, lush green growth. Furthermore, 20-20-20 is a constant liquid feed or periodic feed; therefore, it is important to alternate with water or rain to provide the plant with a boost of balanced nutrition.

Instructions for Jack’s All Purpose 20-20-20:

Jack’s All Purpose 20-20-20 should be used on soil-based media, rather than on soil less media, as well as primarily during warmer months, indoors or in warm-climate regions. These environments allow the roots to take up the nitrogen sources most effectively. Furthermore, long-term use of high Phosphorus formulas can lead to plant stretch in some plant varieties. Therefore, it is recommended when using this formula over long periods (greater than 3-4 months) of plant growth, alternate with a lower Phosphorous source such as rainwater, calcium nitrate or other lower phosphorus fertilizers.

For best results, use warm water to dissolve the product. Jack’s fertilizers are made with 100% soluble raw materials that will form a true solution. However, some raw materials are slower to dissolve than others. Therefore, keep the stock tank covered to reduce light and debris inputs.

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