SKU: 38497635911
20-20-20 fertilizer for indoor plants

20-20-20 fertilizer for indoor plants Jack's Classic - All Purpose 20-20-20

Sale price$21.03 Regular price$23.37
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Ships within 48 hours · Estimated delivery Aug 13 - Aug 18

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Description

20-20-20 fertilizer for indoor plants Jack's Classic - All Purpose 20-20-20With Jack's 20 20 20, you can improve growth in almost any situation any plant, any stage, any weather. This all purpose fertilizer has a 1: 1: 1 NPK ratio with 20% each of nitrogen, phosphate and potash plus trace nutrients such as iron and manganese to promote larger, greener growth. Use it from the start or to "green up" existing plants. The water soluble formula makes mixing it easy for liquid feed either directly to the roots or on the leaves.

With Jack's 20-20-20, you can improve growth in almost any situation - any plant, any stage, any weather. This all-purpose fertilizer has a 1:1:1 NPK ratio with 20% each of nitrogen, phosphate and potash plus trace nutrients such as iron and manganese to promote larger, greener growth. Use it from the start or to "green up" existing plants. The water-soluble formula makes mixing it easy for liquid feed either directly to the roots or on the leaves.

From bedding plants and perennials to fruits, vegetables, trees and turfgrass, Jack's Classic 20-20-20 Fertilizer is the right feed. Though you can use Jack's fertilizer in an array of conditions, warmer temperatures are recommended so plants can make better use of the nitrogen. The manufacturer also suggests alternating with a fertilizer lower in phosphorus to prevent plant stretch over extended periods.

Jack's All-Purpose Fertilizer Features:

  • Versatile 1:1:1 NPK ratio.
  • Easily dissolves in water for spraying and fertigation.
  • Ideal for warmer weather and indoor plants.
  • Sold in four-pound tubs (single or case of six).

How to Use

For small volume mixing
Dissolve the following amounts in 1 gallon of water. An injector should not be used.
1/2 tsp. = 125 ppm
1 tsp. = 250 ppm
1 tbsp. = 750 ppm

Stock Solution

To make a STOCK concentrated solution for use with a fertilizer proportioner. Dissolve the following amounts of fertilizer per 1 gallon of stock water.

Stock Solution 100 ppm 200 ppm 300 ppm
1:100 (1%) setting 6.8 oz. 13.5 oz. 20.3 oz.
E.C. 0.42 0.84 1.2
1:200 (0.5%) setting 13.5 oz. 27 oz. 40.5 oz.
E.C. 0.42 0.84 1.2
1:15 setting* 1 oz. 2 oz. 3 oz.
E.C. 0.42 0.84 1.2
*When using a Siphonex or Hoze-on proportioner

Limit of Solubility in Hot Water = 3.5 lbs. per gallon.


Additional Information

Jack's All-Purpose MSDS (PDF)


Specifications

Total Nitrogen (N)....................................... 20%

2.1% Nitrate Nitrogen
17.9% Urea Nitrogen

Available Phosphate (P2O5)....................... 20%
Soluble Potash (K2O)................................. 20%
Boron (B).................................................... 0.02%
Copper (Cu)................................................ 0.05%
0.05% Chelated Copper (Cu)
Iron (Fe)...................................................... 0.1%
0.1% Chelated Iron (Fe)
Manganese (Mn)......................................... 0.05%
0.05% Chelated Manganese (Mn)
Molybdenum (Mo)....................................... 0.0009%
Zinc (Zn)...................................................... 0.05%
0.05% Chelated Zinc (Zn)
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
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  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 38497635911

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Reviewed in the United States on October 14, 2025
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Husky chew proof....so far
My husky has a habit of gutting and destroying any squeaky chew toy I have gotten for her. This one so far has lasted a over a month now I must say it does make her work for a treat when hidden in the center of it. So far all the stitching and parts are attached and like new. The plastic center where you hid the treats is intact, the firmness of it does make it difficult to get the treats you put in hard to remove-so choose wisely and not put in large pieces as there is one of the first pieces still inside the center as even I can't get it out. So my girl she enjoys carrying it around and playing with it so this chew toy is a win for this husky owner
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Reviewed in the United States on June 28, 2023
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Xtina
New York, US
★★★★★ 1
DANGER
DO NOT BUY!!! DANGER! We have had the turtle ones before and then got these. Be we bought two. there is a plug peice in the end that popped out. My dog ate it the first time and had to have emergency surgery because it was stuck in his intestines. We had it removed which cost THOUSANDS of dollars. Also was on vacation when it happened and had to come early when the sitter informed us he was ill. We felt guilty for month! had he got something in our house or yard was it our faults. We saved what they removed which looked like a cork but we dont drink wine. we have a frenchie that doesnt enjoys long walks on the beach if you know what i mean so would not have had access to eat something other places he doesnt relaly go anywhere. This was his favorite toy for a long time so when it got dirty outside, we threw away the first one and took out the second one to replace it . One day i was sitting playing fetch with him when i saw the plug peice come out. I caught it and took it out of his mouth. I IMMEDIATELY RECOGNIZED IT. I ran to grab the zip lock bag the vet gave us with the cork looking item covered in gunk and slime from inside his intestines, ran to the sink to rinse it off and what do you know. mystery was solved. This toy could have killed my dog !
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Reviewed in the United States on March 3, 2026
M
Verified Purchase
Michelle Clements
Massapequa, US
★★★★★ 5
Turtle is best toy
Color: Yellow (Puzzle Turtle)
My dogs love the turtle. We have purchased several in the last 4 years Please please bring back the colors and make more colors. I would buy a case of them
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Reviewed in the United States on April 25, 2026
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Deena Budd
Draper, US
★★★★★ 5
THE favorite toy
Size: 1 Count (Pack of 1), Style: Shark, Size: 1 Count (Pack of 1), Style: Shark
I found this toy used at a thrift store almost 1 year ago. My Shih tzu mix loved it so much till all the seams ripped out and 2 out of 3 squeekers fell out and it was shambles, hardly usable at all. 1 week ago I decided to try my luck to find a similar shark toy for Finnegan. I couldn't believe my eyes when I found THE EXACT same toy!! When I unboxed it, I put the old and new side-by-side and imagine his surprise, it was priceless! Very pleased with this.
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Reviewed in the United States on May 6, 2026

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