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Grodan A-OK 1"x1" Sheet of 200 Rockwool / Stonewool Starter Cubes for Cuttings, Cloning, Plant Propagation, and Seed Starting

4.5 4.5 out of 5 stars 1,200 ratings
Amazon's Choice highlights highly rated, well-priced products available to ship immediately.
Amazon's Choice in Garden Fertilizers by Grodan

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Customer ratings by feature

Easy to use
4.3 4.3
Value for money
4.0 4.0

Frequently bought together

$26.12
Get it Apr 3 - 5
In Stock
Ships from and sold by Blessed Garden Supply.
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$19.99
Get it Apr 3 - 5
In Stock
Ships from and sold by Granite Supply.
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Product Description

Grodan Rockwool Cubes are one of our most popular items. Suitable for a wide range of plants, Rockwool Cubes are effective in growing anything from tomatoes, lettuce, flowers and even aquatic plants. The cubes are arranged in sheets that make propagating and transplanting easy. It does not lock up or release any substances, ensuring all water and nutrients are available to the plant. It is easy to control and steer the growth of the crop to achieve higher yields than seen in soil-bound cultivation. Stone wool can be composted after use.

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Grodan A-OK 1"x1" Sheet of 200 Rockwool / Stonewool Starter Cubes for Cuttings, Cloning, Plant Propagation, and Seed Starting


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Grodan A-OK 1"x1" Sheet of 200 Rockwool / Stonewool Starter Cubes for Cuttings, Cloning, Plant Propagation, and Seed Starting
Grodan A-OK 1"x1" Sheet of 200 Rockwool / Stonewool Starter Cubes for Cuttings, Cloning, Plant Propagation, and Seed Starting
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Price$26.12$16.10$12.95-9% $19.99
List:$21.89
Delivery
Get it Apr 3 - 5
Get it as soon as Tuesday, Apr 2
Get it as soon as Tuesday, Apr 2
Get it Apr 3 - 5
Customer Ratings
Easy to use
4.3
4.5
4.5
4.6
Value for money
4.0
4.1
4.2
4.4
Sold By
Blessed Garden Supply
The Hydroponic City Los Angeles
The Hydroponic City Los Angeles
Granite Supply

Customer reviews

4.5 out of 5 stars
4.5 out of 5
1,200 global ratings

Customers say

Customers like the germination rate, ease of use, and versatility of the seed starter cubes. For example, they mention that it germinates seeds very well, is convenient, and is great for hydroponics and aquaponic gardening. That said, opinions are mixed on the size, quality, and value.

AI-generated from the text of customer reviews

58 customers mention46 positive12 negative

Customers like the germination rate of the product. They mention that it makes seeds gerinate easier and that it does well for starting seedlings. Some say that the product does not germinate.

"...I had good germination results and these were extremely easy to cut and separate with an old kitchen knife, they are much easier to water and use..." Read more

"...put on a heating mat under good light, keep moist, and prepare for healthy seedlings and good roots from said seedlings or cuttings...." Read more

"Using these for starting seeds under lights. They germinate seeds very well and much faster/ more consistent than using soil...." Read more

"...Product works exactly as expected. No molding, evening in long germinating seeds." Read more

15 customers mention15 positive0 negative

Customers find the seed starter cubes easy to use and convenient. They say it's much easier than starting in soil, and gardening couldn't get any easier. Customers also mention that the cube is easy to transfer to their growing site.

"...center hole (1/4") comparing to other Rockwool cubes, it is very easy to transfer 2 - 3 days' old germinated seeds to these Rockwool cubes...." Read more

"Good stuff for hydroponics. Much easier than starting in soil...." Read more

"Easy to work with during the germinating process." Read more

"Very easy, cubes separate nicely for use in starting plants in my hydroponic system" Read more

12 customers mention12 positive0 negative

Customers are satisfied with the moisture absorption of the product. They mention that it holds moisture very well, keeping the seeds nice and moist. They also say that it naturally keeps water from being stored, and that it wicks water nicely. Customers also mention that the product is easy to use and soaks up water quickly.

"...to cut and separate with an old kitchen knife, they are much easier to water and use than the jiffy peat pots." Read more

"...It's as easy as soak, place your seeds, put on a heating mat under good light, keep moist, and prepare for healthy seedlings and good roots from..." Read more

"...These however, has no such problems.Mold never grew, no damping off, roots would be poking through and numerous about 10 to 14 days...." Read more

"...No issues with damping off or other diseases. Very pleased with the purchase. Also it’s a much better deal here than my local garden store." Read more

8 customers mention8 positive0 negative

Customers like the versatility of the product. They say it's good for hydroponics, gardening, and aquaponic grow beds. Some mention it'll amend soil.

"Good stuff for hydroponics. Much easier than starting in soil...." Read more

"Nice for starting hydroponics. Fragile. The sheets were packed in a plastic bag...." Read more

"...Very well packaged, to the point it was hard to open. Good for amending soil if it was ground." Read more

"This are great for hydroponic gardening to replace the dirt. And I reuse them over and over." Read more

147 customers mention97 positive50 negative

Customers are mixed about the quality of the product. Some mention that it works well, while others say that it breaks apart like crazy and is fragile.

"This was my second order of these and they work well with for the leafy greens that I grow indoors under grow lights. I use them in 2" net cups...." Read more

"Used without any issues for planting new seedlings." Read more

"...It could be the delivery service. Only some of the cubes came apart on their own. The rest had to be cut apart just as you would expect...." Read more

"It worked great for seedlings under grow lights" Read more

44 customers mention30 positive14 negative

Customers are mixed about the value of the product. Some mention it's a nice value, cheap, and works well for the price. However, others say that it'll break easily, is overpriced, and is a total waste of time and money.

"...Good product. Easy-to-use and affordably priced...." Read more

"...Completely false claim, but they are rock wool at a good price and will work fine for seeds.***UPDATE***..." Read more

"The product works very well but is too expensive...." Read more

"...They are alot cheaper than the jiffy pots and work a whole lot better." Read more

38 customers mention17 positive21 negative

Customers are mixed about the size of the rockwool cubes. Some mention that the size is just fine, and the cube is the perfect size for cloning, planting seeds, and small veggies. However, others say that the cubs are a bit small and may prevent light from making its way to the plant.

"...My theory is that these rockwool cubes may be too small to prevent light from making its way to the area where my plant is supposed to be creating..." Read more

"These little cubes are the perfect size for planting seeds. I was able to plant over 200 seeds in under an hour and label all of them...." Read more

"...for seeds (which I will use them for), but are really too small for propagating cuttings (which is what I bought them for.)..." Read more

"These cubes are the perfect size for cloning. They do exactly what I need them to do. Great product for the money and the only ones I'll ever use." Read more

7 customers mention4 positive3 negative

Customers are mixed about the appearance of the outdoor living product. Some mention it looks good, nice, and tidy, while others say it's non-vibrant and withered. Some say the rockwool doesn't impress them and feels cheap.

"First time using these. Very easy to use and satisfied with makeup and design...." Read more

"...of variety, were very short, less than 1/2 inch long and non-vibrant looking (brown and withered)...." Read more

"Looks good haven't used it yet" Read more

"...Rockwool. It feels cheap and the hole insert is quite big." Read more

Want Great Gordon Rockwool For Hydroponics
5 Stars
Want Great Gordon Rockwool For Hydroponics
This Amazon Store has the Best Gordon Rockwool Slabs/Sheets. because I recently Purchase a Sheet of 200 1"x1" Square Blocks for my Indoor Hydroponics System. I will Recommend this Amazon E-Store to anyone looking for the same Brand/Type. That used toward my Hydroponics System, to Grow my Black Seeded Lettuce.
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