Jack's Classic 20-20-20 All Purpose Water-Soluble Fertilizer, 4lb

Love love love it Best nutrients hands down I mostly foliar feed which is more economical when feeding several dozen fruit trees and ornamental trees 1 tablespoon per gallon of water i make 16 gallons at a time and foliar feed everything Works great on the flowers as well I use it on in my Hydroponic set up indoors as well If you are looking for a Quality Nutrient line you found it price is reasonable for the quantity you get low odor all my plants& tree greened right up and responded great to the feeding trees&plants are healthy and happy Check this line up out they have other variations nutrients to suit all your needs and a professional line for bulk purchasing just look in their store ! Happy Growing

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.

I went with Jack's because I was reading a particular text indicating I should apply a 20-20-20 General Purpose fertilizer to my plants to get them a good, solid beginning. So I did it, and purchased a bucket. I bought the 8oz, and thought, "Why am I buying so little?". Well, now I know it isn't so little after all, I'll have this much Jack's for nearly 2 years. Essentially what I did was fill up an empty Cranberry/Pomegranate juice bottle (I think it is 96 ounces, total volume). I followed the advice of other reviewers, I only went with a capful and the whole bottle of water turned into blue-ish water. Once I saw that happened, I knew I had enough fertilizer mixture blended in. I made that batch about 3 weeks ago and still have some left as I am trying to not kill/burn my plants as a result of being impatient with the regular stages of growth. I don't want plants on steroids, I just want my indoors starts to start well enough to then go into the garden come the first moon of May. As I indicated, so far, so good. I see really deep greens in the leaves and the veins of the leaves are very conspicous. I have healthy plants. The reviews for Jack's are many and many of them were convincing enough to prompt me to pick up a bucket. The price is a little high, but it is nice to give Jack's the money instead of Miracle-Gro. Would I advise others that might be considering a purchase of Jack's to go ahead with their purchase? Yes I would. I would also quickly follow up and report that they truly only need a capful or less of the crystalline concentrate to blend in with a volume of water to come upon a really effective liquid fertilizer for their flora and fauna. Go buy a bucket. I would wager that you'll be handily impressed.

My daughter got me a lovely little Norfolk Island Pine tree for Christmas and it is a cherished gift so I want to take the best care possible of my sweet little tree. The grower's tag on the tree stated to use a 20-20-20 fertilizer. I saw that this fertilizer is made by a family owned and operated company out of Allentown Pennsylvania and they have been in business since 1947. The fertilizer is recommended for use on all outdoor and indoor plants. I got the four pound container because it is more economical and it can be used on all plants, indoors and out. I mixed up a gallon of water and one tablespoon of fertilizer and began to water my little tree once a week. I am delighted with the results! My tree is so green and sturdy and I already see lots of healthy growth on all the branches. The needles are wonderfully soft and supple even in a dry house from running the furnace 24/7. I can hardly wait till spring to use it on my hanging baskets and perennials outside. I highly recommend this fertilizer to make all your plants healthy and happy and it's so easy to use.

So far so good As of yet no burned leaves from fertilizer I gave 4 stars , it is early spring here so I cannot give reviews on blooming I do like it, it is all purpose ( all flowers ) it is concentrate and has been in business since 1947 Made in America 20-20-20 Happy gardening

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

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.

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!

Great Product

Good product. Prompt delivery ( faster than promised)

I had been searching for a 20-20-20 balanced plant food for some time. Coming across Jacks Classic plant fertiliser - my first negative reaction was to the high price. However, proceeding to buy the product I discovered how economical it actually is - a tiny amount goes a very long way. On these terms, the 8oz tub I bought (retailing at approx £34) will last and last (kept in suitable storage conditions). It is also suitable for both indoor and outdoor plants - saving the purchase of multi plant feeding products. I highly recommend this product. Ren Godwin

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.

My plants love this! I water all my plants once a month with it and have noticed more leaf growth and overall improvement.