






🌱 Unlock your garden’s full potential with Jack’s Classic—where every leaf tells a story!
Jack's Classic 20-20-20 All Purpose Fertilizer is a professional-grade, water-soluble powder designed for rapid, balanced growth in all indoor and outdoor plants. Featuring a precise NPK ratio and essential micronutrients, it supports lush foliage and vibrant blooms with versatile application methods. Trusted by gardeners for generations, it offers easy mixing, consistent results, and superior plant health in a convenient 4-pound package.
















| ASIN | B00KWYHXXQ |
| Best Sellers Rank | #5,008 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #215 in Garden Fertilizers |
| Brand | Jack's Classic |
| Brand Name | Jack's Classic |
| Coverage | Full |
| Customer Reviews | 4.8 out of 5 stars 10,494 Reviews |
| Global Trade Identification Number | 00671341520641 |
| Included Components | All Purpose Plant Food |
| Item Form | Powder |
| Item Weight | 4 Pounds |
| Liquid Volume | 20 Liters |
| Manufacturer | JR Peters |
| Mixing Ratio | 4 lbs/gallon |
| Model Number | 52064 |
| Specific Uses For Product | All Purpose, Indoor Plants, Outdoor Plants, Vegetable Gardens, Lawns |
| Target Species | plants |
| UPC | 671341520641 |
| Unit Count | 1814.37 Grams |
S**N
Excellent liquid fertilizer product for home gardeners!
I needed a quality source of liquid fertilizer that I could mix in small quantities for my 2025 growing season of young vegetable transplants. I found the product to be simple to mix and it produced excellent results. It was recommended to me by some local greenhouse plant growers. I liked the size, nutrient balance, and value for the money to be excellent. My plants grew very healthy. I used it on flowers and vegetables.
M**N
Great product!
Great product! I don't use anything else!
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
S**H
Literally can't go wrong with Jacks
My garden has never looked so full and healthy till I found d Jack's 20-20-20. I'll never go back to miracle gro. THIS product works and with fruit, veggies and flowers. 10 stars!!!!
A**J
Good NPK ratio. Easy to mix with water
The plants we've used this on seem to respond well. Have had good production on the orchard this past year.
H**N
Always serve Jack’s to my flowers and plants for their happy hour!
All of my flowers, plants and vegetables flourish, bloom and grow beyond measure when I feed them Jack’s Classic All-Purpose Fertilizer! I’m thrilled that it’s a balanced, all purpose fertilizer, so I don’t have to purchase separate fertilizers for various types of plants. Since I live in a far northern climate, my garden has a short growing season. Once the last frost is past, I start feeding all of my perennials. And, as soon as I’ve planted all of my annual containers, they’re lined up for feeding as well. Then, I feed them this wonderful product several times a week. My plants’ leaves become bright green and bushy once they’re regularly fed. Jack’s feeds plants through both their roots and leaves, which ensures the best nutrient absorption. I’m definitely sold on this product, and often gift this to my gardening friends!
T**G
Peters/Jacks The Best
When I was young, my Grandfather introduced me to Peters 20-20-20. He had roses he prized. He used this on his roses, which he would give to friends and neighbors. The roses were huge, healthy and very fragrant. I have used Jacks on my fruits and vegetables, with amazing results. The plants are healthy and the fruits and vegetables beautiful. I use it in a watering can to fertilize the leaves and also to water/fertilize the base of the plant. This is the best fertilizer I have found. Grows award winning plants, and the price point is similar to other sub par fertilizers. Easy to use and mix, and it dissolves almost instantly.
L**T
Product review
This product seems to be working well for my plants health, the smell is not great, it's easy to use, the quality is great. It seems to be working well so far for my plants. Directions are easy to follow and does no require any additional items. I have been using Orchid Food Mist by Miracle Grow on my plans and they have done great, this just ups the growth and health of my 100+ plants.
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