--- product_id: 12049355 title: "10-30-20 Blossom Booster Water-Soluble Fertilizer, 4lb" brand: "jack's classic" price: "R2761" currency: ZAR in_stock: true reviews_count: 13 url: https://www.desertcart.co.za/products/12049355-10-30-20-blossom-booster-water-soluble-fertilizer-4lb store_origin: ZA region: South Africa --- # 10-30-20 NPK for vibrant blooms Water-soluble powder for easy mixing Includes precise measuring spoon 10-30-20 Blossom Booster Water-Soluble Fertilizer, 4lb **Brand:** jack's classic **Price:** R2761 **Availability:** ✅ In Stock ## Summary > 🌿 Feed your flowers like a pro, watch your garden glow! ## Quick Answers - **What is this?** 10-30-20 Blossom Booster Water-Soluble Fertilizer, 4lb by jack's classic - **How much does it cost?** R2761 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.za](https://www.desertcart.co.za/products/12049355-10-30-20-blossom-booster-water-soluble-fertilizer-4lb) ## 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 - • **Precision Dosing:** Free measuring spoon guarantees perfect mix ratios every time—no guesswork. - • **Concentrated Power:** Powdered formula stretches further than liquids, delivering gallons of nutrient-rich feed. - • **Micronutrient Magic:** Enhanced micronutrient package ensures optimal growth without extra supplements. - • **Bloom Brilliance Boost:** Maximize flower color and quantity with a potent 10-30-20 nutrient blend. - • **Versatile Feeding Modes:** Apply as foliar spray or root feed—flexibility that fits your plant care routine. ## Overview Jack's Classic 10-30-20 Blossom Booster is a water-soluble powdered fertilizer designed to enhance flowering plants with a balanced nutrient profile and essential micronutrients. Its versatile application methods and included measuring spoon make it easy to use, while its concentrated formula ensures efficient feeding for up to 4 months of vibrant blooms and healthy growth. ## Description Releases nutrients gradually for up to 4 months of vigorous growth. Blended with an enhanced micronutrient package which provides optimal nutrition for strong roots and green foliage. Features the highest safety factor to prevent burning when applied as directed. Free measuring spoon enclosed for easy and precise application. ## Features - 10-30-20 Analysis - Great for producing brighter, more plentiful flowers in flowering plants. - Many Ways to Feed - Blossom Booster 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 | |---------------|-------| | Application Method | Spray or Mix with Water | | Asin | B00JDRWFF4 | | Best Sellers Rank | #16,672 in Patio, Lawn & Garden (See Top 100 in Patio, Lawn & Garden) #417 in Garden Fertilizers | | Brand | Jack's Classic | | Coverage | Medium | | Customer Reviews | 4.8 4.8 out of 5 stars (5,602) 4.8 out of 5 stars | | Global Trade Identification Number | 00671341510642 | | Included Components | Plant Food | | Item Form | Powder | | Item Highlight | Powdered Plant Food, Targeted Micronutrient Package, Increases Bloom Color & Quantity, Liquid Root & Foliar Feeding | | Item Type Name | Water Soluble Plant Food | | Item Weight | 4 pounds | | Manufacturer | JR Peters | | Mixing Ratio | 10-30-20 | | Model Number | JRP79060 | | Number Of Items | 1 | | Part Number | 207316 | | Specific Uses For Product | Plant Growth | | Target Species | Flowering Plants | | Unit Count | 64 Ounce | | Upc | 671341510642 | ## Product Details - **Brand:** Jack's Classic - **Global Trade Identification Number:** 00671341510642 - **Item Form:** Powder - **Item Weight:** 4 pounds - **Specific Uses For Product:** Plant Growth ## Images ![10-30-20 Blossom Booster Water-Soluble Fertilizer, 4lb - Image 1](https://m.media-amazon.com/images/I/71k7ETtaNDL.jpg) ## Available Options This product comes in different **Size** options. ## Questions & Answers **Q: What would be the correct amount to put in an old 1 lb miracle grow hose end sprayer? 1 lb of Jack's as with miracle gro amount of granules?** A: Yes I believe that is correct. My bucket says 1 tablespoon per gallon of water. Hope that helps! **Q: Can this fertilizer be used for edilbles like tomatoes?** A: Yes, you can use this for edibles. It is my favorite for broccoli. I'm assuming you're concerned with toxicity to humans. It is strictly a fertilizer and has no pesticides or herbicides. Also, the nitrogen content is low enough so that it would not produce the excess foliage in tomato plants as could be a problem with a fertilizer with a higher nitrogen percentage. For plants like lettuce that are eaten for their leaves a fertilizer with more nitrogen would be closer to ideal or slightly more economical. I think the only reason that this fertilizer cannot bear the OMRI organic seal is that it uses a chelating agent called EDTA to enhance the absorption of some minerals. EDTA is also used in toothpaste, cosmetics, as a food preservative, and in EDTA therapy. Unless you are trying to get certified as an organic grower, I see not reason not to use Jack's. **Q: Is this 4lb, or 1lb? the bucket shows 4lb, but the description says 1lb??** A: Good question. I was wondering the exact same thing. However, if you add it to your cart I see it shows 4 lbs. So it should be a 4 lbs container. **Q: How many pounds in the package?** A: Yes, it is four pounds. I have also bought a 25-lb bag from A. M. Leonard, but the shipping cost almost as much as the fertilizer. If you have a lot of plants or a fair sized garden, buying bigger could save some money. Also, as long as Jack's continues to use potassium sulfate as the potassium source it will be one of my preferred all purpose fertilizers. Similar products use much cheaper potassium chloride as their potassium source and that will degrade the taste of some vegetables. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Jack's Blossom Booster works like magic!!! *by on Reviewed in the United States June 11, 2026* This product is spectacular!! I had two hanging plants that had been in the garage and watered for several weeks due to the weather, only placed outside several times. When it got nice enough to hang them outside, they both looked like they were ready for the garbage can. Both had no blossoms left and looked terrible. I had heard about this product last year late in the season but had not ordered any. Well I ordered this and used it as instructed and after the first watering with it there were blossoms returning like magic. I did it again in 7 days and the results are tremendous. Both plants are looking beautiful again and I am so glad that I did not give up on them. I will be buying it again. The product is so easy to use. A measuring device comes with the product with good instructions. Mix the powder with water and water your plants. ### ⭐⭐⭐⭐⭐ Flowers galore *by on Reviewed in the United States October 19, 2026* This stuff is the bomb! My flowers go CRAZY when I use this stuff about once a week. Especially the geraniums. I make sure I always have a bucket of it when spring rolls around. ### ⭐⭐⭐⭐⭐ Excellent fertilizer reaping many blooms *by on Reviewed in the United States August 16, 2026* This is good fertilizer to inspire blooms, and I use it weekly during the growing season in our containers. I highly recommend it. ## Frequently Bought Together - 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 20-20-20 All Purpose Water-Soluble Fertilizer with Micronutrients to Provide General Growth on All Plants, 4lbs - Jack's Classic 12-15-30 Tomato Feed Water-Soluble Fertilizer with Micronutrients for Plant Growth and Abundant Fruit Set in Blooming Vegetable Plants, 1.5lbs, 4 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.co.za/products/12049355-10-30-20-blossom-booster-water-soluble-fertilizer-4lb](https://www.desertcart.co.za/products/12049355-10-30-20-blossom-booster-water-soluble-fertilizer-4lb) --- *Product available on Desertcart South Africa* *Store origin: ZA* *Last updated: 2026-11-01*