--- product_id: 3764567 title: "Miracle-Gro Water Soluble Bloom Booster Flower Food 4 lb" brand: "miracle-gro" price: "€ 53.39" currency: EUR in_stock: true reviews_count: 13 category: "Miracle Gro" url: https://www.desertcart.hr/products/3764567-miracle-gro-water-soluble-bloom-booster-flower-food-4-lb store_origin: HR region: Croatia --- # 10-52-10 NPK high-phosphorus boost Feeds up to 1,600 sq. ft. Instant water-soluble formula Miracle-Gro Water Soluble Bloom Booster Flower Food 4 lb **Brand:** miracle-gro **Price:** € 53.39 **Availability:** ✅ In Stock ## Summary > 🌼 Unlock your garden’s full bloom potential—don’t let your flowers miss out! ## Quick Answers - **What is this?** Miracle-Gro Water Soluble Bloom Booster Flower Food 4 lb by miracle-gro - **How much does it cost?** € 53.39 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/3764567-miracle-gro-water-soluble-bloom-booster-flower-food-4-lb) ## Best For - miracle-gro enthusiasts ## Why This Product - Trusted miracle-gro brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Bloom Like a Pro:** High-phosphorus 10-52-10 formula fuels vibrant, abundant flowers that outshine unfed plants. - • **Safe & Easy Feeding:** Gentle formula won’t burn plants when used as directed; feed every 7-14 days for nonstop color. - • **Long-Lasting Coverage:** One 4 lb. box feeds approximately 1,600 sq. ft., keeping your garden colorful all season. - • **Versatile Garden Hero:** Perfect for containers, hanging baskets, and in-ground beds—your all-season bloom booster. - • **Instant Nutrient Delivery:** Water-soluble powder dissolves quickly for rapid absorption and visible results in days. ## Overview Miracle-Gro Water Soluble Bloom Booster Flower Food is a 4 lb. high-phosphorus fertilizer (10-52-10 NPK) designed to promote more abundant and vibrant blooms in flowering annuals and perennials. Its instantly dissolving formula feeds plants quickly, suitable for containers, hanging baskets, and in-ground beds, covering up to 1,600 sq. ft. Regular feeding every 1-2 weeks ensures a season-long display of stunning flowers without risk of burning when used as directed. ## Description Get ready to fill your garden with spectacular, vibrant color with Miracle-Gro Water Soluble Bloom Booster Flower Food. This formula is your secret to growing more blooms for greater color (vs unfed plants). Our 10-52-10 NPK formula features a boost in phosphorus specifically designed to help your flowering annuals and perennials. The water-soluble flowering plant fertilizer dissolves instantly in water and gets to work right away, feeding your plants for quick, beautiful results. It's the perfect food for your flower garden, whether you're growing in containers, hanging baskets, or in-ground garden beds. Application is simple: just mix flower food with water in a watering can or apply using the Miracle-Gro Garden Feeder. For a stunning show of color all season long, feed your plants every 7 to 14 days. It's safe to use with all plants and guaranteed not to burn when used as directed, so you can feed with confidence. This 4 lb. container of Miracle-Gro Water Soluble Bloom Booster Flower Food feeds approximately 1,600 sq. ft. of garden. Review: Bloom Booster - Have used Miracle-Gro general fertilizer for many years, so thought I'd give the booster a try. My plants reaction is amazing! Easily twice as many blooms per plant. And they produced them very quickly. As instructed I waited to apply it until the plants were beginning to bud, followed by an explosion of flowers. Plants are also very healthy and happy. Highly recommend for flowering plants. In my zone 10, some flowers that had struggled, are now flourishing covered with flowers Review: Best fertilizer for all blooming plants to attract butterflies and hummingbirds - I’ve been using Miracle Gro products for many years, and the Bloom Booster Flower Food is the best fertilizer I’ve used for blooming plants. It produces big beautiful blooms and healthy green leaves. The granules dissolve easily in cold water for ease of use. I measure two tablespoons of granules with the included measuring spoon for each gallon-sized watering can and apply the solution every two weeks. I store the granules in a mason jar to keep out humidity and for easy scooping. I tend to over fertilize, but it hasn’t caused any issues although some reviewers have said to start using at half strength to see how your plants react. Always apply at the base of the plant and avoid wetting leaves especially in bright sunlight but I have never had a.problem with it burning them. Blooming plants need a high-phosphorus fertilizer for strong blooms, and this product is the most effective I’ve used. I’ve applied this product on roses, flowering shrubs, annual and perennials plants in flower beds, pots and hanging baskets with superior results each time. A noticeable difference in appearance, color of blooms and health of plants is evident within a week or two after the first application. I do use a specialized fertilizer on my orchids and Venus fly traps. Besides gardening my other passion is wildlife photography and I have a lot of flowering plants outside every summer to attract them. My photo shows a Swallowtail butterfly sipping nectar from a lantana plant in a hanging basket on my deck last summer. (The preferred flower of butterflies and hummingbirds.) and I only trust Miracle Gro products to keep them coming back for more. The price for the 4lb. size that I purchased for $7.59 is highly competitive and represents substantial value, comparable to that offered by most home and garden centers. Ordering larger sizes on occasion offers better value which suits my frequent outdoor gardening needs. The item arrived on time, well-packaged, and in great condition. Highly recommended. ## Features - Promotes Beautiful Blooms: Miracle-Gro Water Soluble Bloom Booster Flower Food has a high-phosphorus formula to help all your flowering annuals and perennials produce more blooms for greater color (vs unfed plants) - Our flower fertilizer feeds instantly to promote quick and beautiful results - Ideal for Containers and In-Ground Beds: This is the perfect food for all your flowering plants from your potted annuals to hanging baskets to in-ground perennial flower beds - Instant Feeding: This 10-52-10 flowering plant fertilizer starts working right away by giving your flowering plants the nutrients they need for quick, beautiful results - Feed Every 1-2 Weeks: For a season full of stunning color, feed your flowers every 7-14 days; this 4 lb. box of flower fertilizer feeds approximately 1,600 sq. ft. of garden area ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B00C4TPN7K | | Best Sellers Rank | #416 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #20 in Garden Fertilizers #179 in Pest Control Products | | Brand | Miracle-Gro | | Brand Name | Miracle-Gro | | Coverage | 4 | | Customer Reviews | 4.7 out of 5 stars 9,066 Reviews | | Global Trade Identification Number | 07129984811532 | | Included Components | Miracle Gro - 146002 | | Item Form | Powder | | Item Type Name | Miracle Gro - 146002 | | Item Weight | 4 Pounds | | Liquid Volume | 4 Liters | | Manufacturer | The Scotts Company LLC | | Mixing Ratio | 1 tablespoon per gallon | | Model Number | Miracle Gro - 146002 | | Number of Items | 1 | | Part Number | Miracle Gro - 146002 | | Specific Uses For Product | Flowering annuals and perennials, containers, window boxes | | Target Species | flowers | | UPC | 073561460019 720698810568 720698840619 | | Unit Count | 64.0 Ounce | ## Product Details - **Brand:** Miracle-Gro - **Item Form:** Powder - **Item Weight:** 0.5 Pounds - **Liquid Volume:** 4 Liters - **Specific Uses For Product:** Flowering annuals and perennials, containers, window boxes ## Images ![Miracle-Gro Water Soluble Bloom Booster Flower Food 4 lb - Image 1](https://m.media-amazon.com/images/I/715ONFm9KtL.jpg) ## Available Options This product comes in different **Size** options. ## Questions & Answers **Q: What is the n-p-k for this product? i'm surprised it's not mentioned in the product description. thank you.** A: Definitely NOT 10-52-10. This product is the 5.5lb box. It's npk is 15-30-15. This is not mentioned in the description which it should be. I bought this thinking it was 10-52-10. I'm totally bummed because this is the 2nd time I've placed this order only to find that the npk is either not mentioned or is different. NOT COOL!!! **Q: Why is this superior to regular Miracle-Gro for flowering window baskets?** A: Fertilizers have three numbers: NPK: Nitrogen(N)-Phosphorous(P)-Potassium(K): Nitrogen assists the plant grow more leaves, Phosphorous is good for flower production, and Potassium is good for overall health of the plant. The regular all purpose Miracle Grow's numbers are:24-8-16 whereas the Bloom Booster's ratings are: 10-52-10. Bloom Booster has relatively more Phosphorous; thus it is expected to help the plant to grow more buds and fruits. I use it about 1/3 rd spoon ( a weak solution) per gallon for my container plants almost alternate days with great results. **Q: is this product good for vegetable blossoms and setting fruit** A: Absolutely! The Bloom Booster is heavy on the nutrient that 1, develops roots and root systems and 2, helps in the development of the blossoms/flowers that develop into fruits and vegetables. **Q: Can it be used for indoor pot plant?** A: What kind of pot?Works great for me.Youcan also spray on leafs,but not when flowering. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Bloom Booster *by D***H on April 29, 2026* Have used Miracle-Gro general fertilizer for many years, so thought I'd give the booster a try. My plants reaction is amazing! Easily twice as many blooms per plant. And they produced them very quickly. As instructed I waited to apply it until the plants were beginning to bud, followed by an explosion of flowers. Plants are also very healthy and happy. Highly recommend for flowering plants. In my zone 10, some flowers that had struggled, are now flourishing covered with flowers ### ⭐⭐⭐⭐⭐ Best fertilizer for all blooming plants to attract butterflies and hummingbirds *by E***T on December 15, 2025* I’ve been using Miracle Gro products for many years, and the Bloom Booster Flower Food is the best fertilizer I’ve used for blooming plants. It produces big beautiful blooms and healthy green leaves. The granules dissolve easily in cold water for ease of use. I measure two tablespoons of granules with the included measuring spoon for each gallon-sized watering can and apply the solution every two weeks. I store the granules in a mason jar to keep out humidity and for easy scooping. I tend to over fertilize, but it hasn’t caused any issues although some reviewers have said to start using at half strength to see how your plants react. Always apply at the base of the plant and avoid wetting leaves especially in bright sunlight but I have never had a.problem with it burning them. Blooming plants need a high-phosphorus fertilizer for strong blooms, and this product is the most effective I’ve used. I’ve applied this product on roses, flowering shrubs, annual and perennials plants in flower beds, pots and hanging baskets with superior results each time. A noticeable difference in appearance, color of blooms and health of plants is evident within a week or two after the first application. I do use a specialized fertilizer on my orchids and Venus fly traps. Besides gardening my other passion is wildlife photography and I have a lot of flowering plants outside every summer to attract them. My photo shows a Swallowtail butterfly sipping nectar from a lantana plant in a hanging basket on my deck last summer. (The preferred flower of butterflies and hummingbirds.) and I only trust Miracle Gro products to keep them coming back for more. The price for the 4lb. size that I purchased for $7.59 is highly competitive and represents substantial value, comparable to that offered by most home and garden centers. Ordering larger sizes on occasion offers better value which suits my frequent outdoor gardening needs. The item arrived on time, well-packaged, and in great condition. Highly recommended. ### ⭐⭐⭐⭐⭐ This stuff works! *by W***" on May 21, 2024* **Pros:** - **Exceptional Growth**: My flowers have never looked better! The vibrant blooms and healthy foliage are a testament to the efficacy of this product. - **Easy to Use**: The water-soluble formula dissolves quickly and easily, making it simple to apply without any mess. - **Fast Results**: I noticed a significant improvement in my garden within just a couple of weeks. - **Versatile**: Suitable for all types of flowering plants, whether in garden beds, containers, or hanging baskets. - **Good Value**: The 1.5 lb package lasts a long time, providing great value for the price. **Cons:** - **Measuring Scoop**: The product could benefit from including a measuring scoop to make application even more straightforward. - **Storage**: The packaging is not resealable, which could lead to moisture issues if not stored properly. Overall, Miracle-Gro 1001921 Water Soluble Flower Food is a fantastic choice for anyone looking to enhance the beauty and health of their flowering plants. Highly recommended! ## Frequently Bought Together - Miracle-Gro Water Soluble Bloom Booster Flower Food - Miracle-Gro Water Soluble All Purpose Plant Food, Fertilizer for Indoor or Outdoor Flowers, Vegetables or Trees, 3 lbs. - Miracle-Gro Garden Feeder with Water Soluble All Purpose Plant Food, Hose-end Feeder for Outdoor Plants, 1 lb. --- ## 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.hr/products/3764567-miracle-gro-water-soluble-bloom-booster-flower-food-4-lb](https://www.desertcart.hr/products/3764567-miracle-gro-water-soluble-bloom-booster-flower-food-4-lb) --- *Product available on Desertcart Croatia* *Store origin: HR* *Last updated: 2026-07-05*