--- product_id: 3764567 title: "Water Soluble Bloom Booster Flower Food 4 lb | Plant Fertilizer for Annual & Perennial Flowers, In-Ground & Container Roses, Hydrangeas, Hibiscus, 10-52-10 NPK" brand: "miracle-gro" price: "€ 89.47" currency: EUR in_stock: true reviews_count: 13 category: "Miracle Gro" url: https://www.desertcart.hr/products/3764567-water-soluble-bloom-booster-flower-food-4-lb-plant-fertilizer store_origin: HR region: Croatia --- # 2x more blooms vs. unfed Water soluble for easy application Feeds instantly for fast results Water Soluble Bloom Booster Flower Food 4 lb | Plant Fertilizer for Annual & Perennial Flowers, In-Ground & Container Roses, Hydrangeas, Hibiscus, 10-52-10 NPK **Brand:** miracle-gro **Price:** € 89.47 **Availability:** ✅ In Stock ## Summary > 🌼 Unlock your garden’s full bloom potential—don’t let your flowers miss the party! ## Quick Answers - **What is this?** Water Soluble Bloom Booster Flower Food 4 lb | Plant Fertilizer for Annual & Perennial Flowers, In-Ground & Container Roses, Hydrangeas, Hibiscus, 10-52-10 NPK by miracle-gro - **How much does it cost?** € 89.47 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-water-soluble-bloom-booster-flower-food-4-lb-plant-fertilizer) ## 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 - • **Fast-Acting Formula:** Instantly feeds plants for rapid, visible results every time. - • **Effortless Application:** Water-soluble powder works seamlessly with any watering can or Miracle-Gro feeder. - • **Trusted by Garden Pros:** Backed by thousands of 5-star reviews and Miracle-Gro’s legacy of excellence. - • **Consistent Care, Stunning Results:** Feed every 2 weeks to maintain a continuous bloom explosion. - • **Double the Blooms, Double the Impact:** Boost your garden’s color with twice as many vibrant flowers. ## Overview Miracle-Gro Water Soluble Bloom Booster is a 4 lb powder fertilizer designed to promote twice as many blooms and richer color in flowering plants. Easily mixed with water and applied every two weeks, it delivers fast, visible results and is compatible with Miracle-Gro Garden Feeders or any watering can. Highly rated by thousands of gardeners, it’s the go-to solution for vibrant, healthy flowers. ## Description Miracle-Gro® Water Soluble Bloom Booster® Flower Food promotes more blooms for greater color compared to unfed plants. Use our flower food with the Miracle-Gro® Garden Feeder or any watering can, and feed every 2 weeks. Get beautiful results with Miracle-Gro®. Review: Blooming like mad! - Miracle-Gro does it again! They have provided the perfect fertilizer or beautiful blooms in my garden. This stuff works! Thank you Miracle-Gro and desertcart having this product available. 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 ## Features - Promotes more blooms for greater color! *vs. unfed plants - Feed every 2 weeks - Instantly feeds for beautiful results - Use with the Miracle-Gro Garden Feeder or a watering can ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B00C4TPN7K | | Application Method | Water Soluble | | Best Sellers Rank | #743 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #32 in Garden Fertilizers #334 in Pest Control Products | | Brand | Miracle-Gro | | Brand Name | Miracle-Gro | | Coverage | 4 | | Customer Reviews | 4.7 out of 5 stars 9,187 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 | Miracle-Gro | | Mixing Ratio | 1 tablespoon per gallon | | Model Number | Miracle Gro - 146002 | | Number of Items | 1 | | Number of Packs | 1 | | Part Number | Miracle Gro - 146002 | | Target Species | flowers | | UPC | 073561460019 720698810568 720698840619 | | Unit Count | 1 Count | ## Product Details - **Brand:** Miracle-Gro - **Global Trade Identification Number:** 07129984811532 - **Item Form:** Powder - **Item Weight:** 4 pounds - **Liquid Volume:** 4 liters ## Images ![Water Soluble Bloom Booster Flower Food 4 lb | Plant Fertilizer for Annual & Perennial Flowers, In-Ground & Container Roses, Hydrangeas, Hibiscus, 10-52-10 NPK - 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 ### ⭐⭐⭐⭐⭐ Blooming like mad! *by T***T on July 3, 2026* Miracle-Gro does it again! They have provided the perfect fertilizer or beautiful blooms in my garden. This stuff works! Thank you Miracle-Gro and Amazon having this product available. ### ⭐⭐⭐⭐⭐ 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. ## 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-water-soluble-bloom-booster-flower-food-4-lb-plant-fertilizer](https://www.desertcart.hr/products/3764567-water-soluble-bloom-booster-flower-food-4-lb-plant-fertilizer) --- *Product available on Desertcart Croatia* *Store origin: HR* *Last updated: 2026-08-19*