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1.5 inch Rockwool/Stonewool Grow Cubes Starter Sheets for Cuttings, Cloning, Plant Propagation, Seed Starting Hydroponic Grow Media Growing Medium for Vigorous Plant Growth (28, 1.5)

  • Based on 254 reviews
Condition: New
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$11.69 Why this price?
Save $15.80 was $27.49

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Availability: In Stock.
Fulfilled by Amazon

Arrives Tuesday, May 21
Order within 53 minutes
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Features

  • Made from molten rock spun into cotton candy-like fibers and then compressed into cubes, blocks, or slabs, great for Rooting Cuttings clone plants, germination start seeds and more. 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!
  • EASY TO TRANSPLANT - Much easier than starting in soil! Predrilled planting holes make seeding and plant propagation a breeze. Great for hobby and commecial growers
  • 1.5x1.5x1.5 Inches - great-sized to fit a standard flat growing tray.
  • WIDE APPLICATION -These rockwool starter plugs are widely used in hydroponic, seed starting, cuttings, plant propagation and so on. Much easier than starting in soil! They are great for gardening hobby and commercial growers.

Description

PERFECT SIZE There are 32 cubes on one sheet. Each cube measures 1.5” L x 1.5” W x 1.5” H. Perfectly-sized to fit a standard flat growing tray. preferred by many propagators in the industry. This newest Rockwool cubes, plugs, and starter sheets is the newest 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. Each sheet of our rockwool is great-sized to fit a standard flat and each plug has a pre-formed hole to easily plant seeds and cuttings. Once rooted, gardeners can transfer individual cubes to larger pieces of stonewool or plant them directly in soil. Our rockwool Cubes come with a pre-made planting hole which easily allows you to place cuttings, seeds etc into the cubes for fast, easy rooting and sprouting. Once roots develop you can easily separate the cubes and transplant using whatever method you prefer.Please Note :To Soak , simply dig plug briefly (10 sec) in a starter solution adjusted to pH 5.5 using pH down either or a lemon ,Do not squeeze the plug .How to transplant rock wool block Once the you see about 0.5-1" of root growth below the plug, it is time to transplant. They can go straight into the hole, as they do not have any wrapping on them. Your best bet is to transplant the starter plug into a 3" or 4" . WHY? It is much easier to control the moisture level in a 3"-4" than a larger block. Just wait until the block feels really light before you water. Smaller blocks like these will keep an even moisture level in the entire block. Rule of thumb: water 15 minutes before the block goes dry. If you transplant into bigger blocks: It is essential to keep the upper part of the block moist by misting or watering sparingly.


Plant or Animal Product Type: Lemon


Indoor/Outdoor Usage: Indoor


Brand: ZFBB


Material Feature: 有机


Color: Brown


Unit Count: 32 Count


Product Care Instructions: Water


Soil Type: Sandy Soil


Moisture Needs: Moderate Watering


Number of Pieces: 32


Plant or Animal Product Type: Lemon


Indoor/Outdoor Usage: Indoor


Brand: ZFBB


Material Feature: 有机


Color: Brown


Unit Count: 32 Count


Product Care Instructions: Water


Soil Type: Sandy Soil


Moisture Needs: Moderate Watering


Number of Pieces: 32


Package Dimensions: 7.01 x 6.57 x 3.19 inches


Item Weight: 5 ounces


Is Discontinued By Manufacturer: No


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Tuesday, May 21

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews


  • good product
I have bought a lot of these. Made a mistake and ordered the little ones last time!!
Reviewed in the United States on May 8, 2021 by Dale Dallman

  • Poor shipping package
Love the product. Arrived quickly. Corners Of the rockwool were CRUSHED. It was sent in a plastic envelope and should have been shipped in a cardboard box. still useable, however doesn’t look like the picture anymore. Works fine but I had to make the new hoes with a pen. No big deal but still....
Reviewed in the United States on October 1, 2019 by Charlene Charlene

  • What is this stuff - insulation?
Essentially this is insulation. As pictured. Wicks up water. Seeds grow through it. You will need to add fertilizer when growing hydroponically. Came in home-job packaging with box taped all crazy. But doing to job. I cut in half as starters.
Reviewed in the United States on May 25, 2020 by Jen

  • This rockwool is not as dense as I'm accostomed to....
Although there were many choices of rockwool available, and I thought the quality couldn't vary much, this one seems of a lower quality. Specifically, the cubes are not holding their shape well. The fibers are loose and the integrity of the cubes seem compromised,
Reviewed in the United States on March 3, 2020 by Carole Kanegae

  • Fast shipping
Fast shipping and good products
Reviewed in the United States on May 22, 2020 by Pablo Arroyo

  • good product
good product
Reviewed in the United States on October 9, 2019 by Abdullah Al Haddad

  • don't like them
will not buy again not easy to use and don't do a good job
Reviewed in the United States on July 28, 2020 by Charles

  • Ok when you don’t have any plugs
Tend to mold more than the dirt plugs
Reviewed in the United States on November 9, 2020 by Will

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