{"product_id":"jiffy-coco-grow-blocks-50mm-80mm-australia","title":"Jiffy Coco Grow Blocks 50mm \u0026 80mm | Hydroponic Propagation Medium Australia","description":"\u003cdiv class=\"quick-answer-box\"\u003e\n\u003ch2 class=\"quick-answer-title\"\u003eQuick Answer\u003c\/h2\u003e\n\u003cul class=\"quick-answer-list\"\u003e\n\u003cli\u003eCompressed coco coir blocks that expand instantly with water, acting as both container and medium.\u003c\/li\u003e\n\u003cli\u003eBiodegradable and mesh-reinforced, forming a stable, high-oxygen root environment.\u003c\/li\u003e\n\u003cli\u003eAvailable in 50mm Square, 50mm Round and 80mm Square to match your propagation stage specifically.\u003c\/li\u003e\n\u003cli\u003eShips fast from within Australia.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003e100% Coco Coir Propagation Blocks for Cloning, Seedlings and Indoor Plant Growth\u003c\/h2\u003e\n\u003cp\u003eJiffy Grow Blocks are a professional coco coir propagation system that functions as both container and growing medium in one. Compressed, biodegradable, and mesh-reinforced, they activate instantly with water and a nutrient solution, expanding into a stable, high-oxygen root environment that's ready for cuttings or seeds immediately.\u003c\/p\u003e\n\u003cp\u003eAvailable in three formats to match your propagation stage: \u003cstrong\u003e50mm Square\u003c\/strong\u003e for standard cloning and seedling work, \u003cstrong\u003e50mm Round\u003c\/strong\u003e for improved root symmetry and radial development, and \u003cstrong\u003e80mm Square\u003c\/strong\u003e for extended propagation cycles and transplant-ready root systems.\u003c\/p\u003e\n\u003ch3\u003eWhy Jiffy Coco Blocks Outperform Loose Coco and Rockwool Alternatives\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e100% Coco Coir Substrate.\u003c\/strong\u003e Renewable, pH-stable, and naturally high in air-to-water ratio. Compatible with all hydroponic nutrient programs and significantly more forgiving than rockwool for growers new to propagation media.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eContainer and Medium in One.\u003c\/strong\u003e No separate pots, no transplant shock from medium transfer. The block goes directly from propagation tray to final system, roots and all.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBiodegradable Mesh Reinforcement.\u003c\/strong\u003e Holds block structure through the full rooting period while allowing roots to penetrate and exit freely. Transplant the entire block without disturbing the root system.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExpandable Dry Block Technology.\u003c\/strong\u003e Ships and stores compressed. Activates with water in minutes. No pre-soaking period required beyond initial hydration.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh Air-to-Water Ratio.\u003c\/strong\u003e Coco coir fibre structure maintains oxygen availability at the root zone, preventing the anaerobic conditions that cause cutting failure and damping-off.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMultiple Format Options.\u003c\/strong\u003e 50mm square for batch cloning, 50mm round for uniform radial root development, 80mm square for larger cuttings and longer propagation cycles before transplant.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eAvailable Formats\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e50mm Square\u003c\/strong\u003e, standard propagation cube for cloning and seedlings. Fits most propagation trays.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e50mm Round\u003c\/strong\u003e, promotes uniform radial root development. Ideal for cuttings where root symmetry matters at transplant.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e80mm Square\u003c\/strong\u003e, extended root volume for larger cuttings, longer propagation cycles, and transplant-ready root systems.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eHow to Use Jiffy Coco Grow Blocks\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHydrate\u003c\/strong\u003e blocks in pH 5.8-6.2 water with a dilute nutrient solution until fully expanded. Add \u003ca href=\"\/products\/clonex-rooting-gel-purple-australia\"\u003eClonex Rooting Gel\u003c\/a\u003e to cuttings before insertion for maximum rooting success.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCuttings:\u003c\/strong\u003e Insert treated cutting into the centre of the expanded block. Place under a humidity dome immediately.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeeds:\u003c\/strong\u003e Place one seed per block at 5-10mm depth. Maintain 22-26°C and high humidity until germination.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTransplanting:\u003c\/strong\u003e Move when roots are visible at the base and sides of the block. Transplant the entire block directly into your growing system or medium.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFrequently Bought Together\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/clonex-rooting-gel-purple-australia\"\u003eClonex Rooting Hormone Gel\u003c\/a\u003e. Apply to cuttings before inserting into Jiffy blocks for faster, more reliable root initiation.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/jbs-propagation-lid-hydroponic-cloning-dome-australia\"\u003eJB's Propagation Lid\u003c\/a\u003e. Self-dripping humidity dome that maintains the high-humidity environment coco coir blocks and fresh cuttings need during the rooting period.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/homebox-ambient-r80s-grow-tent\"\u003eHOMEbox R80S Propagation Tent\u003c\/a\u003e. Dedicated propagation environment for full climate control over temperature and humidity during cloning and germination.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/grodan-40mm-rockwool-cubes-australia\"\u003eGrodan 40mm Rockwool Cubes\u003c\/a\u003e. Prefer a rockwool-based propagation medium? The Grodan 40mm cube is the commercial-standard alternative to coco blocks for hydroponic cloning.\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eProduct Details\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Coco Coir Propagation Block\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e 100% coconut coir\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAvailable Sizes:\u003c\/strong\u003e 50mm Square, 50mm Round, 80mm Square\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStructure:\u003c\/strong\u003e Biodegradable mesh-reinforced compressed block\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003epH Range:\u003c\/strong\u003e Neutral buffered coco, compatible with pH 5.8-6.2 hydroponic programs\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e Cloning, seed germination, indoor plant propagation\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible Systems:\u003c\/strong\u003e Hydroponics, coco, soil, indoor plants, terrariums\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVendor:\u003c\/strong\u003e Jiffy\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003ch3\u003eDo I need to prepare Jiffy Coco Grow Blocks 50mm \u0026amp; 80mm before using it?\u003c\/h3\u003e\n\u003cp\u003eCoco coir products including Jiffy Coco Grow Blocks 50mm \u0026amp; 80mm should be pre-buffered with a calcium-magnesium solution before use to prevent cation exchange issues that cause nutrient lockout. Expanded clay pebbles (LECA) should be thoroughly rinsed and soaked in pH-adjusted water before planting to remove dust and stabilise pH. Rockwool should be pre-soaked in pH 5.5 water for 24 hours before use to lower its naturally alkaline pH.\u003c\/p\u003e\n\u003ch3\u003eCan I reuse Jiffy Coco Grow Blocks 50mm \u0026amp; 80mm?\u003c\/h3\u003e\n\u003cp\u003eInert media such as expanded clay pebbles can be sterilised and reused multiple times. Rinse thoroughly, soak in a 10% bleach or hydrogen peroxide solution, rinse again with clean water, and re-buffer before reuse. Coco coir can be reused for 2 to 3 grows if properly maintained and sterilised between cycles. Rockwool is typically single-use in commercial applications but can be reused in home setups with thorough cleaning.\u003c\/p\u003e\n\u003ch3\u003eWhat nutrient solution pH should I use with Jiffy Coco Grow Blocks 50mm \u0026amp; 80mm?\u003c\/h3\u003e\n\u003cp\u003eTarget pH 5.8 to 6.2 for coco and hydro inert media. Soil users should target 6.0 to 6.5. Maintaining pH within the optimal range ensures all macro and micronutrients remain soluble and available to plant roots. Use a calibrated pH pen and adjust with pH Up or pH Down solution as needed after mixing your nutrient solution.\u003c\/p\u003e\n\u003ch3\u003eDoes Jiffy Coco Grow Blocks 50mm \u0026amp; 80mm ship fast within Australia?\u003c\/h3\u003e\n\u003cp\u003eYes, Jiffy Coco Grow Blocks 50mm \u0026amp; 80mm ships from within Australia with fast tracked delivery Australia-wide. Most orders to VIC, NSW, QLD, SA and ACT arrive within 2 to 5 business days. WA, NT, and TAS orders typically arrive within 5 to 12 business days.\u003c\/p\u003e","brand":"Jiffy","offers":[{"title":"Round Plug 5cm — Pack of 100","offer_id":43315337887807,"sku":"MJP-P5-100","price":25.95,"currency_code":"AUD","in_stock":false},{"title":"Block 5x5cm — Pack of 50","offer_id":43315337920575,"sku":"MJP-B5-50","price":11.95,"currency_code":"AUD","in_stock":false},{"title":"Block 8x8cm — Pack of 25","offer_id":43315337953343,"sku":"MJP-B8-25","price":15.95,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/6898\/8479\/files\/Jiffy-8x8-1-600x598.jpg?v=1777790121","url":"https:\/\/apexgrow.com.au\/products\/jiffy-coco-grow-blocks-50mm-80mm-australia","provider":"Apex Grow","version":"1.0","type":"link"}