






๐ฑ Unlock your plantsโ full potential with every drop!
Jack's Classic 20-20-20 All Purpose Fertilizer is a water-soluble powder designed for fast, balanced nutrition across all plant types. Featuring a perfect NPK blend plus chelated micronutrients, it supports vigorous growth indoors and outdoors. The included measuring spoon ensures precise application, while the powder form maximizes coverage and efficiency, feeding plants through roots or leaves with minimal risk of burning.

| ASIN | B00KWYHXXQ |
| Brand | Jack's Classic |
| Brand Name | Jack's Classic |
| Coverage | Full |
| Customer Reviews | 4.8 out of 5 stars 2,101 Reviews |
| Global Trade Identification Number | 00671341520641 |
| Item Form | Powder |
| Item Weight | 4 Pounds |
| Item form | Powder |
| Item weight | 4 Pounds |
| Liquid Volume | 20 Liters |
| Liquid volume | 20 Liters |
| Manufacturer | JR Peters |
| Mixing Ratio | 4 lbs/gallon |
| Model Number | 52064 |
| Number of Items | 1 |
| Part Number | 52064 |
| Specific Uses For Product | All Purpose, Indoor Plants, Outdoor Plants, Vegetable Gardens, Lawns |
| Specific uses for product | All Purpose, Indoor Plants, Outdoor Plants, Vegetable Gardens, Lawns |
| Target Species | plants |
| UPC | 671341520641 |
| Unit Count | 1892.7 Milliliters |
D**W
High Leverage All Purpose Nutrition for Garden Efficiency
I used Jack's Classic 20-20-20 All Purpose Fertilizer to maintain my indoor plants and garden vegetables. This balanced formula provides a high torque nutritional baseline that ensures consistent growth across diverse plant species without the need for multiple specialized products. Technical Performance Analysis Balanced Macro Profile: The 20-20-20 NPK ratio provides equal parts Nitrogen, Phosphorus, and Potassium. This creates an efficient growth cycle by supporting foliage density, root structural integrity, and bloom production simultaneously. Micronutrient Integration: Unlike basic fertilizers, this blend includes essential trace elements like Boron, Copper, Iron, and Manganese. These micronutrients act as catalysts for metabolic processes, preventing the yellowing or stunted growth often seen in mineral deficient soil. Solubility and Bioavailability: The powder dissolves completely in water, creating a clear solution that is immediately available for root uptake. This eliminates the lag time associated with granular slow release fertilizers and allows for precise control over feeding schedules. Formulation Stability: The technical grade raw materials ensure the product does not cake or clump in the tub, maintaining a consistent professional grade quality over long term storage. Ease of Use and Value for Money Efficiency: Because this is an all purpose solution, it replaces the need for separate fertilizers for flowers, vegetables, and houseplants. This streamlines your maintenance routine and reduces the inventory of chemicals you need to store. Value: The 4 pound container is highly concentrated. At a standard mixing rate, a single tub produces hundreds of gallons of high quality feed, offering a significantly lower cost per gallon compared to pre mixed liquid fertilizers. User Experience: The included measuring scoop and clear mixing instructions ensure that even a technical user can calibrate the strength for specific needs, such as a weaker dose for delicate indoor plants or a full strength application for heavy feeding vegetables. Pros Balanced formula suitable for almost all plant types Includes a full suite of micronutrients for total plant health Rapid absorption for visible results in growth and color Cons High nitrogen content requires careful dosing to avoid foliage burn on sensitive species
B**0
The end all of fertilizer
Grown from a Lil baby November 2021 into the absolute monster that it stands now Dec 2024 Grow lights and weekly diluted feedings !! All credit to the plant for its glorious natural beauty, but let's be honest. Without Jack's it wouldn't be near what it is today. If your thinking about buying, just do it already. Your plants will thank you.
S**.
Absolutely fantastic. Dissolves easy.
Absolutely fantastic. Dissolves very easily. Scoop into the watering can and fill it up. I shaking or mixing. No settled ingredients. It seems like a profile of nutrient that will work with anything with some minor adjustments. Add some epsom salt or cal mag and itโs perfect for peppers. Complete garden turn around in 1 week.
G**E
Green thumb award
This is one of those products that delivers. It's as good as they claimed. I use it weekly especially on new and struggling plants.
M**N
1 bag was hard
One of the bags of fertilizer was hard, with big, hard chunks. The other bag had to be broken up but was useable.
Trustpilot
5 days ago
1 week ago