UPuper® is a professional supplier of rock wool matrix. Since the 1990s, rock wool substrates have been developed and have a history of over 20 years, registered in more than 20 countries. We have two world-class production lines, achieving zero emissions of solid waste and wastewater, and ultra-low emissions of exhaust gases. It is the largest green rock wool production base with the highest investment and leading technological equipment in the entire Asia Pacific region.

Our products include grow block,propagation plug,Growing Cubes,Seedling plug,Grow Plug,grow slab, etc. Our company has obtained certificates such as SGS, CE, and Australian heavy metal standard test. Our mission is to provide new design projects and high-quality products at competitive prices.UPuper® is gradually carrying out the "recycling" plan - recycling the used rock wool into new products, and continue to play an important role in building energy conservation, industrial thermal insulation and ship safety.

 Please note: The above table data is for reference only. For specific information, please contact us.



marijuana rockwool cubes has the least impact on the environment among all substrates. UPuper® rock wool cubes are made from natural rock and melted at 1500℃. It has no pathogenic bacteria, toxic and harmful substances.
It provides a pollution-free root environment for growing green crops. UPuper® Rock wool substrates can also realize recycling, which makes it to become a green, safe, stable and reliable soilless culture medium.

Instructions for using rockwool cubes:
1. Soak the rockwool cubes in warm water to fully foam.
2. Put the rockwool cubes into a container and distribute evenly.
3. Place the seeds gently on the surface in the correct direction and wrap them in rockwool cubes, as the frosted rockwool  grow cubes can absorb enough water to ensure sufficient moisture coverage of the plant roots.
4. Depending on the variety of plants, they can grow new roots under the support of external plant sprouting cloths, achieving germination.
5. Put the sprouted cloth blocks of plants back into the container and replenish them with water in a timely manner.


Uniform water content and electrical conductivity distribution throughout cubes.
Grooves can facilitate water drainage and provide air pruning on root system.
Rapid root system development.

marijuana rockwool cubes---FAQs Guide

1.As a marijuana rockwool cubes manufacturer,What's the term of payment?
2.How do you prepare marijuana rockwool cubes for planting, and what pre-soaking or conditioning steps are recommended?
3.How do marijuana rockwool cubes accommodate different irrigation methods, including drip systems, flood and drain, or ebb and flow?
4.What is the composition and material of marijuana rockwool cubes, and how do they compare to other growing mediums like soil or coco coir?
5.Are marijuana rockwool cubes suitable for both soil-based and soilless growing systems?
6.What is the water retention capacity of marijuana rockwool cubes, and how does this impact plant hydration and growth?
7.How are rockwool grow cubes used in horticulture and hydroponics?
8.Can marijuana rockwool cubes be used in combination with alternative growing methods like aeroponics or deep water culture (DWC)?
9.Can marijuana rockwool cubes be used for cloning and propagating plant cuttings, and what advantages do they offer for this purpose?

1.As a marijuana rockwool cubes manufacturer,What's the term of payment?

T/T, Paypal, Credit card etc.

2.How do you prepare marijuana rockwool cubes for planting, and what pre-soaking or conditioning steps are recommended?

UPuper is centered on customers and always pay attention to customers' needs for marijuana rockwool cubes products.We provide these suggestions:
1. Pre-soak the rockwool cubes in a nutrient solution for 15-20 minutes. This will help to ensure that the cubes are evenly saturated with water and nutrients.
2. Rinse the cubes with clean water to remove any excess nutrient solution.
3. Place the cubes in a tray or container and fill with water until the cubes are completely submerged.
4. Allow the cubes to soak for 24-48 hours. This will help to ensure that the cubes are fully hydrated and ready for planting.
5. Once the cubes are fully hydrated, drain off any excess water and plant your seeds or cuttings.

3.How do marijuana rockwool cubes accommodate different irrigation methods, including drip systems, flood and drain, or ebb and flow?

marijuana rockwool cubes can accommodate different irrigation methods by providing a variety of sizes and shapes to fit different systems. For example, the cubes can be cut to fit a drip system, or they can be used in a flood and drain system by providing a larger surface area for water to flow through. For an ebb and flow system, the cubes can be used to create a platform for the plants to sit on, allowing the water to flow around them.

4.What is the composition and material of marijuana rockwool cubes, and how do they compare to other growing mediums like soil or coco coir?

marijuana rockwool cubes are made from a combination of basalt and chalk that is melted and spun into fibers. The fibers are then compressed into cubes. Rockwool is a great growing medium because it is sterile, lightweight, and provides excellent drainage and aeration. It also holds moisture well and is pH neutral. Compared to soil, rockwool is much lighter and easier to work with, and it does not contain any of the pests or diseases that can be found in soil. Compared to coco coir, rockwool is more sterile and does not contain any of the salts that can be found in coco coir. Rockwool is also more lightweight and easier to work with than coco coir.

5.Are marijuana rockwool cubes suitable for both soil-based and soilless growing systems?

Yes, marijuana rockwool cubes are suitable for both soil-based and soilless growing systems. Rockwool is a great medium for both types of systems because it is lightweight, sterile, and provides excellent drainage and aeration. It also holds moisture well, making it an ideal choice for both types of systems.

6.What is the water retention capacity of marijuana rockwool cubes, and how does this impact plant hydration and growth?

marijuana rockwool cubes have a water retention capacity of approximately 80-90%. This means that the cubes can absorb and hold a large amount of water, which helps to keep the plant hydrated and promote healthy growth. The high water retention capacity also helps to reduce the amount of water needed for irrigation, as the cubes can slowly release the stored water to the plant over time.

7.How are rockwool grow cubes used in horticulture and hydroponics?

Rockwool grow cubes are used in horticulture and hydroponics as a medium for growing plants. They are made from spun basalt rock and chalk, and are lightweight, sterile, and easy to use. The cubes provide an ideal environment for root growth, and can be used to start seeds, propagate cuttings, and grow plants from seedlings. They are also used to support hydroponic systems, as they can hold water and nutrients, and provide an ideal environment for root growth.

8.Can marijuana rockwool cubes be used in combination with alternative growing methods like aeroponics or deep water culture (DWC)?

Yes, marijuana rockwool cubes can be used in combination with alternative growing methods like aeroponics or deep water culture (DWC). Rockwool cubes are a great medium for starting seeds and cuttings, and can be used in combination with other growing methods to provide a stable environment for the roots to develop. Rockwool cubes can also be used to provide additional aeration and drainage for plants grown in aeroponics or DWC systems.

9.Can marijuana rockwool cubes be used for cloning and propagating plant cuttings, and what advantages do they offer for this purpose?

Yes, marijuana rockwool cubess can be used for cloning and propagating plant cuttings. Rockwool is a great medium for cloning and propagating because it is sterile, lightweight, and provides excellent aeration and drainage. It also holds moisture well, which is important for successful cloning and propagation. Additionally, rockwool is easy to use and can be cut to fit any size container.

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