Jack’s Professional 20-20-20 General Purpose Fertilizer Buy Cheap 2025

The general-purpose industry standard, 20-20-20 is great for maintaining plants in garden center and growing facilities. It provides fast green-up and great foliar expansion due to the high percentage of ammonium and urea nitrogen plus balanced phosphorus and potassium for excellent root and shoot growth.

For Use On: All outdoor grown plants

Growers Who Want: Acidic formula, balanced NPK ratio

Mixing Instructions

Chart displays the amount of dry fertilizer (oz.) to add to each gallon of water to make a concentrated solution. Please check your injector setting before use.

Desired N Feed Rate	Injector Setting			E.C. Value (mmhos)
	1:15	1:100	1:200
50 ppm	.5	3.38	6.75	.22
100 ppm	1.0	6.75	13.5	.44
200 ppm	2.0	13.5	27.0	.87

Limit of Solubility in Hot Water = 4 lbs per gallon

Important Notes

E.C. value is the best method to determine fertilizer strength. Fertilizer appearance may vary in color due to variation in raw material size and tracer dye distribution upon the particles in the bag. In solution, color will remain consistent.

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

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Additional Information

Jack’s Professional 20-20-20 MSDS (PDF)

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Specifications

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Total Nitrogen (N)………………………………… 20% <td

3.83% Ammoniacal Nitrogen
6.07% Nitrate Nitrogen
10.1% Urea Nitrogen

Available Phosphate (P₂O₅)………………….. 20% Soluble Potash (K₂O)…………………………… 20% Magnesium (Mg)………………………………….. 0.05% <td 0.05% Water Soluble Magnesium (Mg) <td Boron (B)……………………………………………. 0.0068% Copper (Cu)………………………………………… 0.0036% <td 0.0036% Chelated Copper (Cu) Iron (Fe)……………………………………………… 0.05% <td 0.05% Chelated Iron (Fe) Manganese (Mn)………………………………….. 0.025% <td 0.025% Chelated Manganese (Mn) Molybdenum (Mo)………………………………… 0.0009% Zinc (Zn)……………………………………………… 0.0025% <td 0.0025% Chelated Zinc (Zn)