---
product_id: 7920573
title: "Jack's Classic 20-20-20 All Purpose Water-Soluble Fertilizer with Micronutrients to Provide General Growth on All Plants, 4lbs"
brand: "jack's classic"
price: "€ 59.86"
currency: EUR
in_stock: true
reviews_count: 13
category: "Jack's Classic"
url: https://www.desertcart.ie/products/7920573-jacks-classic-20-20-20-all-purpose-water-soluble-fertilizer
store_origin: IE
region: Ireland
---

# 20-20-20 balanced NPK formula Water-soluble powder for easy mixing Micronutrients for optimal plant health Jack's Classic 20-20-20 All Purpose Water-Soluble Fertilizer with Micronutrients to Provide General Growth on All Plants, 4lbs

**Brand:** jack's classic
**Price:** € 59.86
**Availability:** ✅ In Stock

## Summary

> 🌱 Unlock your garden’s full potential with Jack’s Classic 20-20-20 — the pro’s secret to lush, envy-worthy growth!

## Quick Answers

- **What is this?** Jack's Classic 20-20-20 All Purpose Water-Soluble Fertilizer with Micronutrients to Provide General Growth on All Plants, 4lbs by jack's classic
- **How much does it cost?** € 59.86 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ie](https://www.desertcart.ie/products/7920573-jacks-classic-20-20-20-all-purpose-water-soluble-fertilizer)

## Best For

- jack's classic enthusiasts

## Why This Product

- Trusted jack's classic brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Balanced Growth Boost:** Industry-standard 20-20-20 formula fuels fast green-up and rapid leaf expansion for all plants.
- • **Complete Nutrition in One:** Micronutrients included for healthier, more vibrant plants without extra supplements.
- • **Precision Dosing Included:** Comes with a measuring spoon to ensure perfect nutrient mix every time—no guesswork needed.
- • **Versatile Feeding Options:** Use as foliar spray or root feed—perfect for indoor, outdoor, and continuous feed systems.
- • **Maximized Value & Coverage:** Powdered concentrate stretches further than liquids, letting you create gallons of nutrient-rich solution.

## Overview

Jack's Classic 20-20-20 All Purpose Fertilizer is a water-soluble powder featuring a balanced nitrogen, phosphorus, and potassium formula enhanced with essential micronutrients. Designed for both foliar and root feeding, it supports rapid green-up and leaf expansion across all indoor and outdoor plants. The included measuring spoon ensures precise mixing, while the concentrated powder form offers excellent value by producing multiple gallons of liquid fertilizer. Trusted by professional growers and home gardeners alike, it’s a versatile, effective solution for vibrant, healthy plants year-round.

## Description

All Purpose 20-20-20 is considered the industry standard of general purpose plant foods by professional growers. It feeds both through the roots and the leaves. This formula of nitrogen, phosphorus and potassium provides fast green-up and rapid leaf expansion. Recommended for use on all your indoor and outdoor plants. Indoors it is especially effective on foliage plants, keeping leaves green. A proven performer in the vegetable garden for generations, this product may be used in combination with Jack’s Classic Blossom Booster giving your plants greener leaves, more flowers and brighter colors.

Review: 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.
Review: 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!!!!

## Features

- 20-20-20 Analysis - Great for providing fast green-up and rapid leaf expansion in all indoor and outdoor plants.
- Many Ways to Feed - All Purpose Fertilizer can be used as a foliar or root feeding product. Great for spraying directly onto leaves, roots, or when used in a continuous feed system.
- Water-Soluble Powder – Powdered concentrates go further than liquid fertilizers. Simply mix your measured powder with water and you are ready to feed with multiple gallons of liquid fertilizer!
- Included Measuring Spoon – All Jack’s Classic fertilizers come with a convenient spoon to create the right amount of liquid fertilizer for your plants.
- Micronutrients - Added micronutrients supply your plant with the nutrition it needs for optimal growth and health. Unlike other fertilizers, additional feeding is not required.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00KWYHXXQ |
| ASIN  | B00KWYHXXQ |
| Best Sellers Rank | #3,661 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #171 in Garden Fertilizers |
| Brand | Jack's Classic |
| Brand Name | Jack's Classic |
| Color | 1 Pack |
| Country of Origin | United States |
| Customer Reviews | 4.8 4.8 out of 5 stars (10,485) |
| Date First Available | October 2, 2000 |
| Date First Available  | October 2, 2000 |
| Directions | 1. Mix the appropriate amount of fertilizer with water, following the mixing instructions chart. Check injector setting before use. 2. Apply the solution to the plants, ensuring it reaches both the roots and leaves. 3. For best results, use warm water to dissolve the product. 4. Use in combination with Jack’s Classic Blossom Booster for greener leaves, more flowers, and brighter colors. |
| Global Trade Identification Number | 00671341520641 |
| Included Components | All Purpose Plant Food |
| Is Discontinued By Manufacturer  | No |
| Item Dimensions LxWxH | 1 x 1 x 1 inches |
| Item Form | Powder |
| Item Package Dimensions L x W x H | 12.24 x 9.72 x 6.85 inches |
| Item Weight | 4 pounds |
| Item model number | 52064 |
| Item model number  | 52064 |
| Liquid Volume | 20 Liters |
| Manufacturer | JR Peters |
| Manufacturer  | JR Peters |
| Model Name | 25010 |
| Number of Items | 1 |
| Product Dimensions  | 1 x 1 x 1 inches; 4 Pounds |
| Size | 4lbs |
| Specific Uses For Product | All Purpose, Indoor Plants, Outdoor Plants, Vegetable Gardens, Lawns |
| Target Audience Keyword | men, unisex-adult, women |
| UPC | 671341520641 |
| Unit Count | 1814.37 Grams |

## Product Details

- **Brand:** Jack's Classic
- **Item Form:** Powder
- **Item Weight:** 4 Pounds
- **Liquid Volume:** 20 Liters
- **Specific Uses For Product:** All Purpose, Indoor Plants, Outdoor Plants, Vegetable Gardens, Lawns

## Images

![Jack's Classic 20-20-20 All Purpose Water-Soluble Fertilizer with Micronutrients to Provide General Growth on All Plants, 4lbs - Image 1](https://m.media-amazon.com/images/I/71VPE24ZFnL.jpg)
![Jack's Classic 20-20-20 All Purpose Water-Soluble Fertilizer with Micronutrients to Provide General Growth on All Plants, 4lbs - Image 2](https://m.media-amazon.com/images/I/812yB2gtNNL.jpg)
![Jack's Classic 20-20-20 All Purpose Water-Soluble Fertilizer with Micronutrients to Provide General Growth on All Plants, 4lbs - Image 3](https://m.media-amazon.com/images/I/81GtqPUmmwL.jpg)
![Jack's Classic 20-20-20 All Purpose Water-Soluble Fertilizer with Micronutrients to Provide General Growth on All Plants, 4lbs - Image 4](https://m.media-amazon.com/images/I/811YjX40ZtL.jpg)
![Jack's Classic 20-20-20 All Purpose Water-Soluble Fertilizer with Micronutrients to Provide General Growth on All Plants, 4lbs - Image 5](https://m.media-amazon.com/images/I/815WfDzggTL.jpg)

## Available Options

This product comes in different **Size** options.

## Questions & Answers

**Q: Could this be used as nutrients in a dwc / hydroponic setup?**
A: SInce it goes into solution easily it can be used in a hydroponic set up. Concentrations will have to be adjusted.

**Q: Does this contain micronutrients? Where can I get a detailed list of ingredients?**
A: Ask the manufacturer for an OSHA sheet. All fertilizers are requrired to submit a full chemical breakdown listed for OSHA which must be supplied to the public on request. These sheets are requested by toxicologists in the ER.

**Q: Do you solve it in the watering water or are these timed release granules? The product image and the description sort of contradict each other.**
A: This water soluble fertilizer feeds both the leaf structure, and the root system when applied as directed. It can be used in multiple spray forms,ie; a spray bottle or hose attachment. You can also pour it from a watering can, or a bucket, right on top of your plants.  Hope this helps.

**Q: What country is this from?**
A: It says right on the container made in Allentown, PA with an American flag . This is really good stuff....get some.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Excellent liquid fertilizer product for home gardeners!
*by S***N on January 15, 2026*

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.

### ⭐⭐⭐⭐⭐ Literally can't go wrong with Jacks
*by S***H on November 25, 2025*

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!!!!

### ⭐⭐⭐⭐⭐ Peters/Jacks The Best
*by T***G on June 25, 2024*

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.

## Frequently Bought Together

- Jack's Classic 20-20-20 All Purpose Water-Soluble Fertilizer with Micronutrients to Provide General Growth on All Plants, 4lbs
- Jack's Classic 10-30-20 Blossom Booster Water-Soluble Fertilizer with Micronutrients for Increasing Color and Quantity of Blooms in Flowering Plants, 4lbs
- Jack's Classic 12-15-30 Veggie Feed Water-Soluble Fertilizer with Micronutrients for Plant Growth and Abundant Fruit Set in Blooming Vegetable Plants, 1.5lbs, 2 Pack

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*Product available on Desertcart Ireland*
*Store origin: IE*
*Last updated: 2026-02-28*