--- product_id: 105598948 title: "Nutrients - Rock Solid (0-4-4) : Bloom Booster (2.5G)" brand: "growth science" price: "£200.94" currency: GBP in_stock: true reviews_count: 8 category: "Growth Science" url: https://www.desertcart.co.uk/products/105598948-nutrients-rock-solid-0-4-4-bloom-booster-2-5g store_origin: GB region: United Kingdom --- # Nutrients - Rock Solid (0-4-4) : Bloom Booster (2.5G) **Brand:** growth science **Price:** £200.94 **Availability:** ✅ In Stock ## Quick Answers - **What is this?** Nutrients - Rock Solid (0-4-4) : Bloom Booster (2.5G) by growth science - **How much does it cost?** £200.94 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/105598948-nutrients-rock-solid-0-4-4-bloom-booster-2-5g) ## Best For - growth science enthusiasts ## Why This Product - Trusted growth science brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Description Product description Made from high quality ingredients, our conventional blend will save you time and money by reducing the number of products required. Fully batch mixed and ready to use in any drip irrigation system, its simple, efficient application makes it a breeze to use in any field or facility. Optimum Ratios: Nutrient ions are chelated and in plant available form. Optimum nutrient ratios for plant growth. Consistency: Every batch sent undergoes a process to ensure quality for our end users. Beneficial inputs: Gives your plants the extra boost with ingredients not seen in dry salt fertilizers. * FDA Disclaimer: These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure or prevent any disease. Growth Science Nutrients - Strength (0-0-3) : Silica Supplement Our silica formula was designed to help reinforce the plant cell walls and fortify plants against stressors inside and out. Most manufactures in this industry separate ingredients into as many bottles as possible and charge a premium for branding, but the vast majority of growers are wising up to this and are looking for a high-quality consolidated solution. For optimum results, combine with Growth Science A & B. Base A (5-0-0) : Base Nutrients Base A is he first of our two-part base nutrients providing key macro and micro nutrients such as nitrogen, calcium, manganese, and iron. Base B (0-6-4) : Base Nutrients Base B is our second compound of base nutrients and provides other important elements such as phosphorous, potassium, and magnesium. Solid Start (2-0-6) : Veg Booster Solid Start is a specially formulated veg booster created by Growth Science. It contains two types of kelp to encourage prolific vegetative growth — Giant Pacific Kelp and Norwegian Kelp. These, alongside extra Nitrogen and Potassium, assist in the advancement of a plant’s vegetative period. Cultivators use Solid Start to create a large framework of flowering sites, then switch to Rock Solid to feed and nourish their flowers. Rock Solid (0-4-4) : Bloom Booster Rock Solid: Increase your yield’s potential with our powerful bloom booster formula. Give your plants the extra boost it needs and watch them reach maximum production in both aroma and flavor profile. Growth Science Rock Solid solution was created to be used in conjunction with Base A and Base B nutrients to advocate maximum yields. Review: Thanks for such a great fantastic product ! - I don't think it could have worked much better , it's only been a little over a week and definitely see a difference. I also purchased Solid Start. I've used both of these in different applications all over my farm . So it's hard to be specific but everything is growing , fruiting, blooming :) Review: Great product - Bought this to attempt to force out some late season flowering in my tomatoes. It worked beyond my expectations. Will do business again. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07HSWDW6J | | Best Sellers Rank | #1,144,183 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #10,634 in Garden Fertilizers | | Brand | Growth Science | | Brand Name | Growth Science | | Coverage | Medium | | Customer Reviews | 4.4 out of 5 stars 137 Reviews | | Item Form | Granules | | Item Weight | 2.5 Grams | | Liquid Volume | 2.5 Gallons | | Manufacturer | Growth Science | | Model Number | GSCRSF | | Number of Items | 1 | | Part Number | GSCRSF | | Specific Uses For Product | Flowering Plants, Multiple Growing Environments | | Target Species | plants | | UPC | 855275005225 | ## Product Details - **Brand:** Growth Science - **Item Form:** Granules - **Item Weight:** 2.5 Grams - **Liquid Volume:** 2.5 Gallons - **Specific Uses For Product:** Flowering Plants, Multiple Growing Environments ## Images ![Nutrients - Rock Solid (0-4-4) : Bloom Booster (2.5G) - Image 1](https://m.media-amazon.com/images/I/51JO-WBOTeL.jpg) ## Questions & Answers **Q: How often do you feed rock solid to the plants? Every watering or once a week?** A: once a week is plenty. **Q: Is this comparable to rock resinator ? Thanks** A: Most definitely! Just be sure to apply at the proper ratios form the feeding charts on our site! **Q: What proportion of rock solid to be added in spray bottle?** A: I use it as a supplement for soil feeding. I actually haven't tried it as a foliar spray yet. I will have to give that a try. I will say that I am a believer. Density is increased. No doubt ## Customer Reviews ### ⭐⭐⭐⭐⭐ Thanks for such a great fantastic product ! *by J***E on August 21, 2016* I don't think it could have worked much better , it's only been a little over a week and definitely see a difference. I also purchased Solid Start. I've used both of these in different applications all over my farm . So it's hard to be specific but everything is growing , fruiting, blooming :) ### ⭐⭐⭐⭐⭐ Great product *by B***1 on September 3, 2016* Bought this to attempt to force out some late season flowering in my tomatoes. It worked beyond my expectations. Will do business again. ### ⭐⭐⭐⭐ buy great product *by D***D on October 25, 2016* I was skeptical at first but after reading all the reviews and then actually trying it I have been using over a week the first few days the flowers got very dense but the last four days have not seen any difference but it is a good product I'm happy it made them dense will possibly use again --- ## 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.uk/products/105598948-nutrients-rock-solid-0-4-4-bloom-booster-2-5g](https://www.desertcart.co.uk/products/105598948-nutrients-rock-solid-0-4-4-bloom-booster-2-5g) --- *Product available on Desertcart United Kingdom* *Store origin: GB* *Last updated: 2026-06-27*