Grodan 1.5" Rockwool Mini Blocks – 45 Pack Rockwool Cubes for Hydroponics, Seed Starter & Cloning + 5 THCity Stakes

I’ve been using the Grodan Rockwool Starter Mini‑Blocks for seeds and cuttings, and they’ve consistently impressed me: • Exceptional moisture retention: these blocks soak up nutrient solutions effortlessly and stay damp long enough for healthy root development  . • Perfect size and packaging: individually wrapped cubes maintain their shape and cleanliness until you’re ready to use them (). • Resilient structure: even after soaking, they hold together and support fragile seedlings—no crumble or mess . • Beginner-friendly: effortless to use—just soak to desired pH and insert your seed or cutting; roots thrive within days (). • Affordable and effective: many users find them “fantastic at a reasonable price” for hydro setups .

I have used these for months now with over 20+ seedling plants and they have been great. Every seedling planted in these has survived so far. I soak them overnight before adding the new seedling. They hold water well and keep it for several days. I also use a cloning root gel and humidity dome and tray. These fit nicely into the tray and seem to really facilitate root growth. They are a great value for the money and to make sure your seedling survives.

It works great for my gardyn just gotta trim it down to fit but I get good germination from these! Keep moist

Solid except this size is too small (I would try >=2 inch if I ever run out, or trying to tape two together vertically, and a variety pack option would be interesting). You ideally want bigger propogation cuttings but for this, in order to hold the cut steady, the stem will need to be so far down that roots may have trouble forming without air pruning. It also is going to be more prone to drying out. Also side note, I have no idea what people are talking about with "taking the wrapper off"? I hope they mean the paper tape binding the rows together but just break off individual ones and no need for that trouble. The branded plastic, I wouldn't mess with up front. You can take it off when you plant it, but that helps with moisture and directing the roots down and general sturdiness. If you can't peel off the wool entirely without risking the roots, then yeah just take the plastic off then.

Just what i needed.

Used these to start my kale lettuce seeds. They come with a tiny hole in the center to simply drop the seeds in, i used a toothpick to press them down snugly. The pods fit perfectly into the seedling starter tray. They are firm, but have enough flex for a nice snug fit. Planted 2 seeds in each pod, wet them down with my aquarium fish tank water and set under an inexpensive grow light. Pics are the results 1 week later. Rockwool is the best. No dirt, no mess, and almost instant seedlings. Little pricey compared to soil but worth every penny IMO.

Clean product, does not appear to be of old stock, delivered quickly, and ready to use as advertised. I have recently begun to see the many benefits of hydroponic gardening, so cannot give a full review, but I will say that if you haven't at least dipped your toe into the possibilities, I fully recommend you try a simple coco/perlite grow, follow the basic advice that is easily available online and you too will be a believer once you experience the results for yourself. Night and day growth over soil, unless outside in the ground, its hard to beat coco/perlite. Now am stepping it up with a homemade dwc setup. Seems like a no brainer but we'll have to see. Thanks for reading, good luck and happy growing to all. On another note, Amazon is great for trying new things quick and cheep though once I find a local shop that carries the products used, we believe its always important to support our neighbors and local communities. Peace n Love

Fast lshippment. Well packed. Very useful

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