SKU: 33685131990
20 20 plant fertilizer

20 20 plant fertilizer Jack's Classic 20-20-20

Sale price$21.04 Regular price$23.38
Save 10%

Pay in installments of $5.84 with ShopPay, AfterPay and Klarna

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Oct 27 - Nov 1

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

Description

20 20 plant fertilizer Jack's Classic 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:
  1. Standard Shipping : 3-10 business days
  • 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: 33685131990

Discover Niche Categories That Outsell 20 20 plant fertilizer

Top-Converting Item to Boost Your Average Order

4.8 ★★★★★
Based on 5 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
A
Verified Purchase
Amazon Customer
Carnegie, US
★★★★★ 5
It works
This the best facial soap that I have found so far my skin 😍
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 4, 2026
A
Verified Purchase
Angela Petta
Louisville, US
★★★★★ 1
Unfortunately, it has an unpleasant scent
I read the reviews and a few mentioned they were not fond of the scent. I decided to give it a try since I liked the ingredients and it seemed like it would compliment my skin type. Yes, unfortunately the scent is just way too much for me. I did not open the item or use it. Upon opening the Amazon shipping bag, I could smell it. I decided to return it. I'm disappointed, because it might be a great product. I do not want to put the brand or product down since I was unable to try it. The scent is just not for me.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 17, 2025
K
Verified Purchase
Keyonnia
Carnegie, US
★★★★★ 5
Good soap
Love soap so far. Makes my face feel smooth good at removing dull skin.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 18, 2026
B
Verified Purchase
Bo
San Leandro, US
★★★★★ 5
An amazing Korean herbal soap!
An amazing product! With K-beauty products becoming popular worldwide, I was looking for a facial soap made with traditional Korean herbs & wild flowers etc. and ended up buying this product. Since it is a product made with traditional herbs & wild flowers, it has a strong herbal scent, but I personally liked the scent that reminded me of taking a herbal bath or herbal steam sauna. The foam was silky & sticky and after washing my face, it calmed down the redness and had a great soothing effect. If you want a medicinal soap made with traditional herbs & wild flowers that are not artificial, I highly recommend it. Although it wasn't very large size however it seemed to be made with such luxurious medicinal herbs & wild flowers. I love this product!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on July 18, 2025
L
Lindsey Thompson
Phoenix, US
★★★★★ 4
Smells heavenly!
- I could smell it immediately as soon as I pulled it out of the package; it smells so good! Really fresh. I think it’s the rosemary and eucalyptus oils in it maybe? - It has both a manufacturing date and an expiration date printed on the package - It has a really interesting texture (up close picture included). - It does produce a lot of lather, although it’s not a sticky lather like the listing photos show. You can absolutely tell that there are several different types of oils in the ingredients, as your skin feels very nice and moisturized after use. I’ve only been using the bar for a few days but I am a bit leery due to the number of oils in the ingredients that it may clog my pores. Nothing so far though! - Since it does create such a good lather, I can see how this bar would last you a long time. - The price is pretty in line with other snail mucin cleansers and given the ingredients I think this is a quality product so I think it’s worth giving a try!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 10, 2025

recommand products