GrodanRockwool 1.5" x 1.5" x 1.5" Mini Blocks Pack of 45

I grow hydroponically and use this to start my seeds. It is just as described. Overall it works well for our needs

I had never used these to start vegetables before so I tried to start grow a tomato from seed.WOW! LOOK AT MY TOMATO PLANT!! works exactly as it should. Reasonable price. It's never been so easy starting seeds I will definitely order these again. Thanks Grodan.

These are really well made rockwool cubes. I know that sounds weird, because rockwool is rockwool. Will it help my plants grow any better compared to other rockwool, probably not. But they are very clean, perfectly cut, and very easy to work with. There is no mess, because they are already separated. This is now my go to brand for these.Note these are not tapered. They are great for all my needs except in my NFT trays. This is because the tapered ones fit better in the holes.

great for new seedlings in my Lettuce Grow

Works

I am a master horticulturalist. I have used starter cubes for 20 years now easy. They are awesome. Depending on the plant species, Ive had hemp clones root and blast out of the bottom of the block usually in 5-7 days. My record is 24 hrs from clone cut to coming out of domes. The seller is great. Ive bought several times from them and will continue too.

So I went outside the usual found a cheaper rockwool cubes and purchased them instead of this brand I've always used. Well they sucked big time fell apart when pre-soaked and that's what I get. Now these here I love and ha e never let me down by collapsing in on itself and EVERYTHING I ha e ever put in this brands cubes has ALWAYS established a very healthy root network system. 💪💪👌👌👍👍 Never again will I stray from the path.

I used these for an aeroponic set up we have at home to grow various lettuce, chard, kale, basil, etc. The packaging was pretty great and it kept the cubes pretty clear of any pollutants.Now with the seeds we planted, not all sprouted but this could be on our end. The cubes were a perfect fit for our aeroponic set up. We have also purchased smaller rockwool cubes from the same company and almost none of the seeds we planted in those ever had anything germinate. I have 10 set up with seeds right now. Only 3 have sprouted anything in the last month. The chard and Russian kale sprouted but none of the other seeds. Hope they come along at some point.