SKU: 34304850047
jack's fertilizer for plants

jack's fertilizer for plants Jack's Classic 20-20-20

Sale price$24.40 Regular price$27.11
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Description

jack's fertilizer for plants 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: 34304850047

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Verified Purchase
Keith Trapp
West Palm Beach, US
★★★★★ 5
Great little cleaner
Size: L50 Hybrid-renewed
I have a 2000 sqft condo with all stained concrete floors and this little vacuum does a great job. The set up in the app was very simple and the vacuum scanned the whole place and then got to cleaning. It takes it just under 2 hours to clean everywhere and then returns itself to the base for charging. The battery is at about 25% after the two hours. For $125 on Amazon Renewed, I can’t see how you could do better. I do empty the tray after each cleaning but that’s no big deal.
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Reviewed in the United States on September 10, 2024
B
Verified Purchase
Biermeister99
Lowell, US
★★★★★ 1
Run! Believe the bad reviews, they are shipping non-refurbished junk, no warranty or support!!
Size: L50 Hybrid-renewed
I have been a loyal Anker and especially Eufy devotee for at least a decade, I now have four levels to clean and have 6 Eufy's running! Well, I did. I got to #6 by purchasing this model, refurbished, I trusted in the Anker/Eufy brand that "Refurbished" really meant that, that it would be like new, and that while it only had a short warranty (3 months!), this would not really matter with Anker/Eufy quality and reliability. Unlike other companies in their neck of the woods, they have always taken pride in their brand and taking care of customers--I know this from personal experience. WRONG! The company is not what it used to be. This product is not "Refurbished, but like new" as I expected, and based on the many other reviews on here of people who just received used returned products. It seems Anker has reached a new low, and just try to harvest some profit off of returns by selling them to us on here. My L50 impressed me for exactly 3 months, and then started getting stuck, and stopping in the middle of the room without finishing. I should have returned it there and then, but I had no reason to distrust that the issue was resolvable, or Anker would take care of me. At 4-5 months it got worse, and wouldn't clean at all, and just bombed out saying laser error. I followed all the online debug steps (clean everything, make sure the laser turns and is clean/clear, factory reset, etc.). Same error. I set it aside as we got busy in the holidays. So, now, 6 months later, reaching out to customer service, get the door slammed in my face by the first responder ("Kelly"). Escalating, the second responder "Shane" helpfully sends me a link to their return policy, and "graciously" offers me about a $25 discount on new high end models costing $330-$690! Gee...thanks. So, leave me with a junk vacuum, and your "offer" is that I spend hundreds of dollars and trust you again?! No thanks! I guess my love affair with Eufy is over. No more will I recommend Eufy to all who will listen. I will certainly not be a customer in the future. They have "grown up", and think customers don't matter any more, we are just cash cows. Very sad...
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Reviewed in the United States on January 15, 2026
C
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Courtney Mury
Charlottesville, US
★★★★★ 5
AMAZING!
Size: L50 Hybrid-renewed
I love the ability to map out our house and have it clean while we are gone. This machine has a good battery life, rarely gets stuck and works very well overall. We will not live without one now!
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Reviewed in the United States on December 4, 2024
A
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Amazon Customer
Omaha, US
★★★★★ 4
Refurbished model parts missing, but Eufy/Anker fixed it.
Size: L50 Hybrid-renewed
I purchased a refurbished Robovac L50, and was excited to see if it was an improvement from my old 1s. Unfortunately the dust basket was missing a pin and that plastic screen that keeps the filter and foam in. I contacted the vendor, and Eufy responded quickly. The unit itself has laser guidance and a great app that lets you control it and set times, etc. It’s a definite evolution from the 1s. It is faster, cleans better, and allows you more ways to control it This is a great value for the money, especially for the refurbished price and the outstanding customer service.
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Reviewed in the United States on December 30, 2024
K
Verified Purchase
K Griffee
Alexandria, US
★★★★★ 5
Eufy beats the other guys in everything
Size: L60 Hybrid-renewed
We thought our old Eufy died so I ordered this since I always wanted the self-emptying model and the roller hair cutter was a big bonus since we have a chocolate lab that sheds a small bunny's worth of hair every day. Easy to set up, get added to the app, and just works. I will have to order more bags for the cleaning station, but overall very happy with this purchase even though the old Eufy started to work again right after this arrived.
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Reviewed in the United States on August 21, 2025

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