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49 Rockwool Grow Cubes (1.5 Inches) - Growing Medium Starter Sheets (49 Per Pack)

4.5 4.5 out of 5 stars 1,466 ratings
Amazon's Choice highlights highly rated, well-priced products available to ship immediately.
Amazon's Choice in Plant Germination Kits by Stacky Cubes

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48 Per Pack

Purchase options and add-ons

  • Inorganic & Sterile Growing Medium
  • A Superior Medium For Rooting Cuttings
  • Encourages Faster Initial Rooting & Its Firmness Is Guaranteed
  • Provides 20% Air Space When Saturated - Absorbs nutrient solution while retaining plenty of oxygen for rapid root growth!
  • Cubes Measure: 1.5" x 1.5" x 1.5"

Customer ratings by feature

Easy to use
4.5 4.5
Value for money
4.2 4.2
Sturdiness
4.0 4.0

Customers usually keep this item

This product has fewer returns than average compared to similar products.

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49 Rockwool Grow Cubes (1.5 Inches) - Growing Medium Starter Sheets (49 Per Pack)


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Product Description

The manufacturer has many years of experience developing Rockwool products in the Netherlands and is preferred by some of the largest industrial propagators in the world. The quality of their newest Rockwool cubes, plugs, and starter sheets is by far the best on the market with superb air to water ratio and a fiber structure that holds water longer and has less resistance for the roots to grow in, resulting in stronger roots. Rockwool also encourages faster initial rooting and its firmness is guaranteed. Blocks measure 1.5” x 1.5” x 1.5”

Customer reviews

4.5 out of 5 stars
4.5 out of 5
1,466 global ratings

Customers say

Customers like the performance, quality and ease of use of the rockwool cubes. For example, they mention that it works well in seed germination, has a high success rate and that it's easy to maintain. Some are happy with value, and versatility. That said, opinions are mixed on growth rate, and fit.

AI-generated from the text of customer reviews

45 customers mention41 positive4 negative

Customers are satisfied with the performance of the product. They mention that it works well in seed germination, has a high success rate, and is perfect for starting lettuce and clones. Some say that they work great in their tower garden and with a pH correction soak. Overall, most are happy with their purchase and recommend it to others.

"...What a difference! No mold. No smell. And, the seeds looked super healthy and sprouted fast...." Read more

"...Worked really well with a pH correction soak" Read more

"...Works well for starting seeds." Read more

"...With the combined use of root gell, clones root easily and have a high success rate. Seems to work almost better than starting them in just soil...." Read more

39 customers mention30 positive9 negative

Customers like the quality of the product. They mention it's a good product, works well, and is unbeatable. Some say that the material is cool and holds up well. Overall, most are happy with their purchase and recommend it to others.

"Good stuff" Read more

"product itself is easy to use. plants grew healthy and nice and fitted my ycube. Thanks" Read more

"...This item is quality made and acceptable to purchase based on my experience with the product I was given.______________________________________..." Read more

"...Overall this media success rate is low and causes flying insects in the house.Pro:- Cheaper than aerogarden plugs..." Read more

17 customers mention17 positive0 negative

Customers appreciate the value of the planter. They say it is a great buy and saves on buying plants.

"...This item is quality made and acceptable to purchase based on my experience with the product I was given.______________________________________..." Read more

"...replacements for my Tower Garden and these were perfect and at a lower price than at the Tower Garden website...." Read more

"...thru the product as they should Pleased with the product and price point" Read more

"Good price . Worked well in seed germination" Read more

13 customers mention13 positive0 negative

Customers find the planting cubes easy to use and clean. They say it makes their planting experience so much easier. Customers also mention the cube is dirt-free, easy to maintain, and easy to grow plants. They also say it's the ideal way to begin.

"product itself is easy to use. plants grew healthy and nice and fitted my ycube. Thanks" Read more

"...this because I’m thinking dirt free, easy to maintain, and easy to grow plants. I also looked up different ways to maximize the rockwool...." Read more

"Easy to use. Used for staring plants and transferring to hydroponic system" Read more

"...I grow a lot of hydroponic veggies. These are the ideal way to begin." Read more

6 customers mention6 positive0 negative

Customers like the versatility of the product. They mention it's perfect for hydroponics, aquaponic systems, and planting for hydroponically.

"Great for my Hydroponics" Read more

"Perfect for my hydro system" Read more

"Excellent for planting for hydroponics" Read more

"Perfect for hydroponics..." Read more

18 customers mention8 positive10 negative

Customers are mixed about the fit of the planters. Some mention that it fits snugly in a 2" net pot, while others say that it's too small.

"They are very small so be aware of that...." Read more

"product itself is easy to use. plants grew healthy and nice and fitted my ycube. Thanks" Read more

"From the reviews, I'm seeing that the size of the cubes are smaller than the advertised 1.5 in...." Read more

"These fit the baskets and worked very well." Read more

8 customers mention4 positive4 negative

Customers are mixed about the growth rate of the product. Some mention that their plants are doing well, germinating, and growing healthy. Others say that the rockwool turns black, the plants grow slowly, and often dies.

"product itself is easy to use. plants grew healthy and nice and fitted my ycube. Thanks" Read more

"...Once the rockwool turn black, the plant grow slowly and often dies.-..." Read more

"Everything germinated, holds up pretty well, but in some of my more acidic nutrient solution plants there has been some shedding of particulate...." Read more

"...I don’t want blame the product for the lack of growth in my seeds, because as we all know seeds, don’t grow 100% of the time...." Read more

4 customers mention0 positive4 negative

Customers are dissatisfied with the durability of the outdoor living product. They mention that most of their plants died and that it failed twice using rockwool.

"...I had a special cutting from a rare plant and it failed twice using rockwool. I used soil and had no problems with my cuttings." Read more

"...Out of 7 jars only 2 sprouted and those promptly died. I emptied them and started over today...." Read more

"...even had roots when I put them in the cubes but they still died in a couple days...." Read more

"Too tough for plant roots to grow through. Most of mine died...." Read more

Good product
4 Stars
Good product
Packaging was not the best but the came in and got 50 cubes. Instead of 49. And there bigger then 1.5 inches over all im happy and they work for my needs.
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