--- product_id: 7920573 title: "Jack's Classic 20-20-20 All Purpose Water-Soluble Fertilizer, 4lb" brand: "jack's classic" price: "NT$4926" currency: TWD in_stock: true reviews_count: 13 category: "Jack's Classic" url: https://www.desertcart.tw/products/7920573-jacks-classic-20-20-20-all-purpose-water-soluble-fertilizer store_origin: TW region: Taiwan --- # 20-20-20 balanced NPK for rapid green-up Water-soluble powder for easy mixing & max coverage Micronutrient-packed for all-round plant health Jack's Classic 20-20-20 All Purpose Water-Soluble Fertilizer, 4lb **Brand:** jack's classic **Price:** NT$4926 **Availability:** ✅ In Stock ## Summary > 🌱 Feed smart, grow proud — your plants’ secret weapon! ## Quick Answers - **What is this?** Jack's Classic 20-20-20 All Purpose Water-Soluble Fertilizer, 4lb by jack's classic - **How much does it cost?** NT$4926 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.tw](https://www.desertcart.tw/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 - • **Micronutrient Boost:** Includes essential trace elements for optimal plant vitality—no extra supplements needed. - • **Precision Dosing Spoon:** Comes with a measuring spoon for hassle-free, accurate mixing every time. - • **Dual Feeding Flexibility:** Use as foliar spray or root feed—perfect for any plant care routine. - • **Balanced 20-20-20 Formula:** Delivers fast, vibrant leaf expansion and lush green growth indoors and out. - • **Powdered Concentrate Efficiency:** Mixes easily to create up to 20 gallons of nutrient-rich solution, stretching your investment further. ## Overview Jack's Classic 20-20-20 All Purpose Fertilizer is a professional-grade, water-soluble powder designed for rapid green-up and leaf expansion in all indoor and outdoor plants. Featuring a balanced nitrogen-phosphorus-potassium ratio and essential micronutrients, it supports robust growth through both foliar and root feeding. The included measuring spoon ensures precise mixing, making it a versatile and efficient choice for gardeners seeking vibrant, healthy plants. ## 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: High Leverage All Purpose Nutrition for Garden Efficiency - 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 Review: Always serve Jack’s to my flowers and plants for their happy hour! - 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! ## 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 | | Application Method | foliar or root feeding | | Best Sellers Rank | #10,764 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #308 in Garden Fertilizers | | Brand | Jack's Classic | | Brand Name | Jack's Classic | | Coverage | Full | | Customer Reviews | 4.8 out of 5 stars 10,499 Reviews | | Global Trade Identification Number | 00671341520641 | | Included Components | All Purpose Plant Food | | Item Form | Powder | | Item Highlight | Powdered, Targeted Micronutrient Package, Promotes Growth, Green-Up, and Leaf Expansion on All Indoor and Outdoor Plants | | Item Weight | 4 pounds | | Liquid Volume | 20 liters | | Manufacturer | JR Peters | | Mixing Ratio | 4 lbs/gallon | | Model Number | 52064 | | Number of Items | 1 | | Number of Packs | 1 | | Part Number | 52064 | | Specific Uses For Product | Plant Growth | | Target Species | plants | | UPC | 671341520641 | | Unit Count | 64 Ounce | ## Product Details - **Brand:** Jack's Classic - **Item Form:** Powder - **Item Weight:** 4 pounds - **Liquid Volume:** 20 liters - **Specific Uses For Product:** Plant Growth ## Images ![Jack's Classic 20-20-20 All Purpose Water-Soluble Fertilizer, 4lb - Image 1](https://m.media-amazon.com/images/I/71VPE24ZFnL.jpg) ![Jack's Classic 20-20-20 All Purpose Water-Soluble Fertilizer, 4lb - Image 2](https://m.media-amazon.com/images/I/812yB2gtNNL.jpg) ![Jack's Classic 20-20-20 All Purpose Water-Soluble Fertilizer, 4lb - Image 3](https://m.media-amazon.com/images/I/81GtqPUmmwL.jpg) ![Jack's Classic 20-20-20 All Purpose Water-Soluble Fertilizer, 4lb - Image 4](https://m.media-amazon.com/images/I/811YjX40ZtL.jpg) ![Jack's Classic 20-20-20 All Purpose Water-Soluble Fertilizer, 4lb - 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 ### ⭐⭐⭐⭐⭐ High Leverage All Purpose Nutrition for Garden Efficiency *by D***W on March 29, 2026* 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 ### ⭐⭐⭐⭐⭐ Always serve Jack’s to my flowers and plants for their happy hour! *by H***N on March 19, 2026* 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! ### ⭐⭐⭐⭐⭐ Bloomers *by A***I on August 25, 2026* Keeps petunias blooming all season ## 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 --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.tw/products/7920573-jacks-classic-20-20-20-all-purpose-water-soluble-fertilizer](https://www.desertcart.tw/products/7920573-jacks-classic-20-20-20-all-purpose-water-soluble-fertilizer) --- *Product available on Desertcart Taiwan* *Store origin: TW* *Last updated: 2026-09-27*