{"product_id":"vivosun-rockwool-starter-cubes-1-1-6-seed-plugs","title":"Vivosun Rockwool Grow Cubes Starter Sheets","description":"\u003ch4\u003e\u003cbr\u003e\u003c\/h4\u003e\n\u003ch2\u003eVivosun Rockwool Grow Cubes Starter Sheets\u003c\/h2\u003e\n\u003cdiv\u003e\n\u003cp\u003eStarting seeds and clones in soil invites damping off, uneven moisture, and roots that struggle for oxygen, all of which lead to slow, inconsistent starts. Vivosun Rockwool Grow Cubes give every seed and cutting a sterile, uniform start. With 95% porosity, roots stay in constant contact with air, while the fibrous structure holds water and nutrients longer than soil. The result is faster germination and stronger root systems that are ready to transplant sooner.\u003c\/p\u003e\n\u003cp\u003eEach cube is made from basalt rock that's melted at high temperature, spun into fibers, and compressed into a dense block that holds its shape without crumbling. A pre-formed planting hole in every cube makes seeding and cloning quick. Once roots develop, the cubes break apart easily for transplanting into net pots, soil, or larger rockwool blocks.\u003c\/p\u003e\n\u003cp\u003eChoose the 1\" cubes (4 sheets of 50, 200 plugs total) for high-volume seed starting, or the 1.6\" cubes (28 per sheet, available in 1-sheet or 4-sheet packs) for larger seeds and cuttings that need more root room. Both sizes suit hobby growers and commercial propagation.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin: 20px 0;\"\u003e\u003cvideo src=\"https:\/\/cdn.shopify.com\/videos\/c\/o\/v\/91efd7411e3b4dfca26ee541fccf7488.mp4\" style=\"width: 100%; height: auto; border-radius: 8px;\" autoplay=\"autoplay\" muted=\"\" loop=\"loop\" playsinline=\"\" controls=\"controls\" loading=\"lazy\"\u003e\n\u003c\/video\u003e\u003c\/div\u003e\n\u003ch4\u003eFeatures\u003c\/h4\u003e\n\u003cstyle\u003e\n  .image-gallery-container{max-width:1000px;margin:20px auto;}\n  .image-gallery{display:grid;grid-template-columns:repeat(2,1fr);gap:15px;}\n  .gallery-item{aspect-ratio:1;overflow:hidden;border-radius:8px;}\n  .gallery-item img{width:100%;height:100%;object-fit:cover;transition:transform 0.3s ease;display:block;}\n  .gallery-item:hover img{transform:scale(1.05);}\n  @media (max-width:768px){\n    .image-gallery{display:flex;overflow-x:auto;scroll-snap-type:x mandatory;-webkit-overflow-scrolling:touch;gap:12px;}\n    .gallery-item{flex:0 0 85%;scroll-snap-align:start;}\n  }\n\u003c\/style\u003e\n\u003cdiv class=\"image-gallery-container\"\u003e\n\u003cdiv class=\"image-gallery\"\u003e\n\u003cdiv class=\"gallery-item\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1383\/1731\/files\/Vivosun_Rockwool_Grow_Cubes_6.jpg?v=1790353231\" alt=\"Vivosun rockwool grow cubes starter sheet with pre-formed planting holes\"\u003e\u003c\/div\u003e\n\u003cdiv class=\"gallery-item\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1383\/1731\/files\/Vivosun_Rockwool_Grow_Cubes_4.jpg?v=1790353230\" alt=\"Vivosun rockwool cubes supporting seedling root development\"\u003e\u003c\/div\u003e\n\u003cdiv class=\"gallery-item\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1383\/1731\/files\/Vivosun_Rockwool_Grow_Cubes_5.jpg?v=1790353230\" alt=\"Vivosun basalt rockwool cube porous fiber structure\"\u003e\u003c\/div\u003e\n\u003cdiv class=\"gallery-item\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1383\/1731\/files\/Vivosun_Rockwool_Grow_Cubes_2.jpg?v=1790353230\" alt=\"Vivosun rockwool starter plugs for seed starting and cloning\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cstyle\u003e\n  .features-grid-container{display:flex;flex-wrap:wrap;justify-content:center;gap:1rem;padding:2rem 0;font-family:'Helvetica Neue',Helvetica,Arial,sans-serif;margin:0 auto;max-width:1240px;}\n  .feature-card{background-color:transparent;padding:1.5rem;border-radius:8px;text-align:center;flex:0 1 240px;box-sizing:border-box;}\n\u003c\/style\u003e\n\u003cdiv class=\"features-grid-container\"\u003e\n\u003cdiv class=\"feature-card\"\u003e\n\u003cspan style=\"font-size: 2.5em; line-height: 1; color: #2c5530;\"\u003e🪨\u003c\/span\u003e\n\u003ch5 style=\"font-size: 1.1em; font-weight: bold; color: #333; margin: 0.75rem 0 0.5rem 0;\"\u003eBasalt Stonewool\u003c\/h5\u003e\n\u003cp style=\"font-size: 0.95em; line-height: 1.6; color: #555; margin: 0;\"\u003eMelted basalt fibers are compressed into dense cubes that hold their shape without crumbling.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"feature-card\"\u003e\n\u003cspan style=\"font-size: 2.5em; line-height: 1; color: #2c5530;\"\u003e🌬️\u003c\/span\u003e\n\u003ch5 style=\"font-size: 1.1em; font-weight: bold; color: #333; margin: 0.75rem 0 0.5rem 0;\"\u003e95% Porosity\u003c\/h5\u003e\n\u003cp style=\"font-size: 0.95em; line-height: 1.6; color: #555; margin: 0;\"\u003eKeeps roots in full contact with oxygen for rapid, vigorous early growth.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"feature-card\"\u003e\n\u003cspan style=\"font-size: 2.5em; line-height: 1; color: #2c5530;\"\u003e🧫\u003c\/span\u003e\n\u003ch5 style=\"font-size: 1.1em; font-weight: bold; color: #333; margin: 0.75rem 0 0.5rem 0;\"\u003eSterile \u0026amp; Inert\u003c\/h5\u003e\n\u003cp style=\"font-size: 0.95em; line-height: 1.6; color: #555; margin: 0;\"\u003eInorganic, sterile media provides a cleaner start for seeds than soil.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"feature-card\"\u003e\n\u003cspan style=\"font-size: 2.5em; line-height: 1; color: #2c5530;\"\u003e💧\u003c\/span\u003e\n\u003ch5 style=\"font-size: 1.1em; font-weight: bold; color: #333; margin: 0.75rem 0 0.5rem 0;\"\u003eLong Water Retention\u003c\/h5\u003e\n\u003cp style=\"font-size: 0.95em; line-height: 1.6; color: #555; margin: 0;\"\u003eFibrous structure holds water and nutrients longer to build stronger root systems.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"feature-card\"\u003e\n\u003cspan style=\"font-size: 2.5em; line-height: 1; color: #2c5530;\"\u003e🕳️\u003c\/span\u003e\n\u003ch5 style=\"font-size: 1.1em; font-weight: bold; color: #333; margin: 0.75rem 0 0.5rem 0;\"\u003ePre-Formed Planting Holes\u003c\/h5\u003e\n\u003cp style=\"font-size: 0.95em; line-height: 1.6; color: #555; margin: 0;\"\u003eEvery cube is ready for a seed or cutting, making propagation fast and consistent.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"feature-card\"\u003e\n\u003cspan style=\"font-size: 2.5em; line-height: 1; color: #2c5530;\"\u003e✂️\u003c\/span\u003e\n\u003ch5 style=\"font-size: 1.1em; font-weight: bold; color: #333; margin: 0.75rem 0 0.5rem 0;\"\u003eEasy to Separate\u003c\/h5\u003e\n\u003cp style=\"font-size: 0.95em; line-height: 1.6; color: #555; margin: 0;\"\u003eBreak or cut cubes apart to transplant into net pots, soil, or larger blocks.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch4\u003eWhat's Included\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e1x or 4x Rockwool Grow Cube Starter Sheets, based on the option selected\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4 style=\"margin-bottom: 0;\"\u003eSpecifications\u003c\/h4\u003e\n\u003cstyle\u003e.styled-spec-container{width:100%;overflow-x:auto;-webkit-overflow-scrolling:touch;border:1px solid #eee;border-radius:8px;margin-bottom:1em;}.styled-spec-table{width:100%;border-collapse:collapse;}.styled-spec-table thead{background-color:#f8f8f8;}.styled-spec-table th,.styled-spec-table td{padding:12px 15px;text-align:left;vertical-align:top;}.styled-spec-table th{font-weight:bold;color:#333;border-bottom:2px solid #ccc;}.styled-spec-table td{border-bottom:1px solid #eee;}.styled-spec-table tbody td:first-child{font-weight:500;color:#444;}.styled-spec-table tbody tr:last-child td{border-bottom:none;}\u003c\/style\u003e\n\u003cdiv class=\"styled-spec-container\"\u003e\n  \u003ctable class=\"styled-spec-table\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth\u003eSpecification\u003c\/th\u003e\n        \u003cth\u003eValue\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eBasalt stonewool\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003ePorosity\u003c\/td\u003e\n\u003ctd\u003e95%\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003ePlanting Hole\u003c\/td\u003e\n\u003ctd\u003ePre-formed in each cube\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eUses\u003c\/td\u003e\n\u003ctd\u003eSeed starting, cloning, cuttings, hydroponics\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003e1.6\" Cube Sheet Dimensions\u003c\/td\u003e\n\u003ctd\u003e11.8\" × 6.5\" × 1.6\"\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003e1.6\" Cubes per Sheet\u003c\/td\u003e\n\u003ctd\u003e28\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003e1.6\" Sheet Weight\u003c\/td\u003e\n\u003ctd\u003e150 g (5.3 oz)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003e1.6\" 1-Pack\u003c\/td\u003e\n\u003ctd\u003e1 sheet, 28 cubes\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003e1.6\" 4-Pack\u003c\/td\u003e\n\u003ctd\u003e4 sheets, 112 cubes\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003e1\" Cube Sheet Dimensions\u003c\/td\u003e\n\u003ctd\u003e11.0\" × 5.3\" × 1.0\"\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003e1\" Cubes per Sheet\u003c\/td\u003e\n\u003ctd\u003e50\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003e1\" Sheet Weight\u003c\/td\u003e\n\u003ctd\u003e3.5 oz\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003e1\" 4-Pack\u003c\/td\u003e\n\u003ctd\u003e4 sheets, 200 cubes\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\u003ch4\u003eHow to Use\u003c\/h4\u003e\n\u003col\u003e\n\u003cli\u003eSoak the rockwool in a nutrient solution adjusted to your target pH.\u003c\/li\u003e\n\u003cli\u003ePlace seeds or cuttings into the pre-formed planting holes.\u003c\/li\u003e\n\u003cli\u003eMaintain proper moisture, light, and temperature to support germination.\u003c\/li\u003e\n\u003cli\u003eOnce roots extend about 0.5–1\" through the cube, separate it and transplant into a suitable container.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch4\u003eWarranty\u003c\/h4\u003e\n\u003cp\u003eVivosun Rockwool Grow Cubes are a consumable growing medium sold as-is with no warranty.\u003c\/p\u003e\n\u003ch4\u003eFrequently Asked Questions\u003c\/h4\u003e\n\u003cdiv class=\"faq-container\"\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cdiv class=\"faq-question\"\u003e\n\u003cspan\u003eDo I need to soak rockwool cubes before planting?\u003c\/span\u003e \u003cspan class=\"faq-icon\"\u003e+\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-answer\"\u003e\n\u003cdiv\u003e\n\u003cp\u003eYes. Soak the cubes in a nutrient solution adjusted to your target pH before adding seeds or cuttings. This conditions the rockwool so it provides a stable, nutrient-ready environment from day one.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cdiv class=\"faq-question\"\u003e\n\u003cspan\u003eShould I choose 1\" or 1.6\" cubes?\u003c\/span\u003e \u003cspan class=\"faq-icon\"\u003e+\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-answer\"\u003e\n\u003cdiv\u003e\n\u003cp\u003eThe 1\" cubes pack 50 plugs per sheet, which makes them the efficient choice for high-volume seed starting. The 1.6\" cubes give larger seeds and cuttings more room to root before transplanting.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cdiv class=\"faq-question\"\u003e\n\u003cspan\u003eCan I use these cubes for clones and cuttings?\u003c\/span\u003e \u003cspan class=\"faq-icon\"\u003e+\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-answer\"\u003e\n\u003cdiv\u003e\n\u003cp\u003eYes. Vivosun Rockwool Grow Cubes work for cloning, cuttings, seed starting, and general plant propagation. The high porosity and water retention support fast root development on fresh cuttings.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cdiv class=\"faq-question\"\u003e\n\u003cspan\u003eWhen should I transplant my seedlings?\u003c\/span\u003e \u003cspan class=\"faq-icon\"\u003e+\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-answer\"\u003e\n\u003cdiv\u003e\n\u003cp\u003eTransplant once healthy roots have grown about 0.5–1\" through the cube. Separate the cube from the sheet and move it into a net pot, soil, or larger container.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cdiv class=\"faq-question\"\u003e\n\u003cspan\u003eWhy use rockwool instead of soil for starting seeds?\u003c\/span\u003e \u003cspan class=\"faq-icon\"\u003e+\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-answer\"\u003e\n\u003cdiv\u003e\n\u003cp\u003eRockwool is sterile and inorganic, which gives seeds a cleaner start than soil. Its 95% porosity keeps roots oxygenated, while the fibrous structure holds water and nutrients evenly for more consistent germination.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cdiv class=\"faq-question\"\u003e\n\u003cspan\u003eWill the cubes fall apart when wet?\u003c\/span\u003e \u003cspan class=\"faq-icon\"\u003e+\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-answer\"\u003e\n\u003cdiv\u003e\n\u003cp\u003eNo. The basalt fibers are compressed using a proprietary process so each cube holds its shape without crumbling, even when fully saturated. You can still cut or separate cubes cleanly when you need to.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"VIVOSUN","offers":[{"title":"1 pack \/ 1.6\"","offer_id":52551804223704,"sku":"WEB-RC-0001","price":11.99,"currency_code":"USD","in_stock":true},{"title":"4 pack \/ 1.6\"","offer_id":52551804289240,"sku":"WEB-RC-0001-4","price":23.99,"currency_code":"USD","in_stock":true},{"title":"4 pack \/ 1\"","offer_id":52551804322008,"sku":"WEB-RC-0002-4","price":20.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1383\/1731\/files\/Vivosun_Rockwool_Grow_Cubes_1.6_1.png?v=1790355349","url":"https:\/\/trimleaf.com\/products\/vivosun-rockwool-starter-cubes-1-1-6-seed-plugs","provider":"Trimleaf","version":"1.0","type":"link"}