--- product_id: 23296686 title: "Grodan Rockwool 1.5\" cubes (45/Pack)" brand: "grodan" price: "£49.04" currency: GBP in_stock: true reviews_count: 8 url: https://www.desertcart.co.uk/products/23296686-grodan-rockwool-1-5-cubes-45-pack store_origin: GB region: United Kingdom --- # 8-hour soak conditioning for perfect prep 20% air space for optimal root oxygenation Inorganic, sterile rockwool base Grodan Rockwool 1.5" cubes (45/Pack) **Brand:** grodan **Price:** £49.04 **Availability:** ✅ In Stock ## Summary > 🌱 Elevate your propagation game with rock-solid precision! ## Quick Answers - **What is this?** Grodan Rockwool 1.5" cubes (45/Pack) by grodan - **How much does it cost?** £49.04 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/23296686-grodan-rockwool-1-5-cubes-45-pack) ## Best For - grodan enthusiasts ## Why This Product - Trusted grodan brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Breathe Easy:** Maintains 20% air space even when saturated, ensuring roots never suffocate - • **Clean & Sterile:** Inorganic and sterile composition eliminates risk of contamination or pests - • **Root Like a Pro:** Superior medium engineered for rapid, healthy cutting root development - • **Compact Powerhouse:** 45 perfectly sized 1.5" cubes in a convenient triple-strip pack for efficient propagation - • **Ready When You Are:** Prepares quickly with an 8-hour soak, so your cuttings hit the ground running ## Overview Grodan Rockwool 1.5" cubes (45/pack) offer a sterile, inorganic growing medium designed for superior rooting of cuttings. With 20% air space when saturated, these cubes optimize oxygen flow to roots, promoting healthy growth. Conditioned by soaking for eight hours, they come in a convenient pack of 45 cubes, each 1.5 inches square, ideal for professional and hobbyist gardeners seeking reliable propagation results. ## Description Three strips of 15 wrapped Mini-Blocks - 45 total blocks each measuring 1.5 in. square. ## Features - An inorganic and sterile growing medium made from spun molten rock - A superior medium for rooting cuttings - Provides 20% air space when saturated - Does not contain nutrients - Condition by soaking for eight hours ## Technical Specifications | Specification | Value | |---------------|-------| | Asin | B00CJICFKY | | Best Sellers Rank | #303,721 in Patio, Lawn & Garden (See Top 100 in Patio, Lawn & Garden) #896 in Pest Control Baits & Lures | | Brand Name | Grodan | | Customer Reviews | 4.5 4.5 out of 5 stars (553) 4.5 out of 5 stars | | Global Trade Identification Number | 00856372001394 | | Manufacturer | Grodon | | Manufacturer Part Number | 713040 | | Model Number | GL56713040STRIP | | Number Of Packs | 3 | | Style Name | Modern | | Unit Count | 45 Count | | Upc | 856372001394 | ## Product Details - **Brand:** Grodan - **Global Trade Identification Number:** 00856372001394 - **Number of Packs:** 3 - **Style:** Modern - **UPC:** 856372001394 ## Images ![Grodan Rockwool 1.5" cubes (45/Pack) - Image 1](https://m.media-amazon.com/images/I/71IJyrCsI4L.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Great for getting your plants ready for the garden. *by on Reviewed in the United States October 5, 2019* I get these little cubes every year to plant my tomatoes, cucumbers, squash, pepper and zucinni seeds in and they work great. With just a little learning curve you can learn to use them to easily water by setting them in a tray and watering them all at the same time which saves so much time over watering individual little cups.There is a pre made hole in the little cube for the seed to go into, I usually use something like a screwdriver to make it the right size for the seed I am using. It is so simple and this stuff holds a lot of water so you dont have to water all the time and it also makes it harder to overwater them. Then when they are ready you just take them out in the garden in your tray and dig little holes drop the cube in with the plastic removed and you are done. It isn't near as messy and it makes planting your veggies a pleasure instead of a chore trying to keep up with a million little black cups and trying not to break the soil off the roots. These are fast and easy to use. ### ⭐⭐⭐⭐⭐ Easy to use, and well worth it *by on Reviewed in the United States March 9, 2018* These are the best thing since sliced bread. I have never had such success as I am having now starting herbs from seed. Just follow the simple 1 - 2 instructions, and your seeds will be sprouting in no time. Squeeze lemon in a bowl of water, soak squares for about 10 seconds, do not squeeze, and use as intended. I've only used them to start herbs from seed. I just sprinkled the seeds on top of my prepared squares, popped them on a leak proof tray, loosely covered them with a clear plastic bag, and placed in filtered sunlight. Within a week all seeds sprouted, and some are 2 inches tall (the dill is about 3 inches). Even the rosemary is doing well. Forget peat, this is neat ;-) ### ⭐⭐⭐⭐⭐ A good choice *by on Reviewed in the United States June 13, 2012* Been using the rockwool cubes a while now and they really perform well for me. I really like how they come individually wrapped in the sheets as that allows you to leave the wrapper on and lets me focus the root growth down (not a big issue just keeps any from coming out the lower sides of the mesh baskets where the misters might not completely cover the roots). They work great in hydroponic systems but are also pretty cool if you own one of those little indoor kitchen gardens for herbs and whatnot, you can tear off little pieces of these cubes and use them in that which is alot cheaper than buying their 'custom' ones.Advice: the ph for cubes like this is a little higher than you will want for some growing, take some water and add your ph down solution OR you can use distilled white vinegar thought I have not found the vinegar to be quite as effective. You really want the ph in the cubes anywhere from 5.5-7.0, I usually aim for 6.0-6.5 and have no issues. ## Frequently Bought Together - Grodan Rockwool 1.5" cubes (45/Pack) - HydroDynamics Clonex Rooting Compound, 100 ml - Grodan Rockwool Delta GRO Blocks | 4" Cube - Pack of 6 | + Twin Canaries Chart --- ## 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/23296686-grodan-rockwool-1-5-cubes-45-pack](https://www.desertcart.co.uk/products/23296686-grodan-rockwool-1-5-cubes-45-pack) --- *Product available on Desertcart United Kingdom* *Store origin: GB* *Last updated: 2026-08-14*