UPuper® is a company specializing in the manufacturing and export of rock wool substrates for agricultural cultivation. Our goal is to provide high-quality products that are environmentally and human friendly, and affordable for our customers. Our company was established in 2011 with a registered capital of 100 million US dollars. It is the largest green rock wool production base with the highest investment and leading technological equipment in the entire Asia Pacific region.

We mainly produce Grow Plug,grow block,propagation block,grow slab,Seedling plug,Growing Cubes and others. We are committed to providing pollution-free, high-performance, sustainable, and safe substrates for agricultural facilities. Nowadays, we have made a lot of contributions to the digitalization,automation,large-scaling of agricultural facilities.

 Please note: This table is for reference only, please consult us for specific information.



rockwood grow cubes can be made into different specifications according to the needs, which is suitable for automatic sowing, industrialized seedling raising, mechanized transplanting etc. UPuper® rock wool is light without scattering, which can reduce labor cost and intensity. It helps to improve labor environment and production efficiency.
The return liquid of UPuper® rock wool is clean so that it can be recycled, which not only saves water and fertilizer, but also protects the environment. UPuper® rock wool substrate is manufactured in full automatic production lines so that the customer will receive products with accurate size and fast delivery time. UPuper® can meet the needs of different growers in different periods.

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.


Give roots more growing space.Better water and fertilizer retention.

rockwood grow cubes---FAQs Guide

1.How do rockwood grow cubes compare to traditional soil in terms of plant growth rates and yields?
2.How do you prepare rockwood grow cubes for planting, and what pre-soaking or conditioning steps are recommended?
3.Are there any concerns or precautions related to the health and safety of growers working with rockwood grow cubes, including dust or fiber exposure?
4.As a rockwood grow cubes manufacturer, What's the lead time?
5.Are rockwood grow cubes compatible with automatic irrigation and nutrient delivery systems commonly used in hydroponics?
6.Can rockwood grow cubes be used in combination with alternative growing methods like aeroponics or deep water culture (DWC)?
7.About rockwood grow cubes,How to calculate the irrigation amount of nutrient solution?
8.Is it possible to get samples of the rockwood grow cubes for you?
9.About rockwood grow cubes,What is the best time of for daily irrigation?

1.How do rockwood grow cubes compare to traditional soil in terms of plant growth rates and yields?

rockwood grow cubes are a great alternative to traditional soil for growing plants. They provide excellent aeration and drainage, which can lead to faster growth rates and higher yields. Rockwool also has a higher water-holding capacity than soil, which can help to reduce the amount of water needed for plants. Additionally, rockwool is sterile, so it is less likely to contain disease-causing organisms that can harm plants. Overall, rockwool grow cubes can provide a great environment for plants to thrive in, leading to faster growth rates and higher yields.

2.How do you prepare rockwood grow 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 rockwood grow 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.Are there any concerns or precautions related to the health and safety of growers working with rockwood grow cubes, including dust or fiber exposure?

Yes, there are health and safety concerns related to working with rockwool grow cubes. Rockwool is made from melted basaltic rock and chalk, and when it is cut or handled, it can release dust and fibers into the air. This dust and fiber can be inhaled and can cause irritation to the eyes, nose, and throat.
It can also cause skin irritation and respiratory problems. Therefore, it is important to wear protective gear such as a dust mask, safety glasses, and gloves when handling rockwool. Additionally, it is important to ensure that the work area is well-ventilated and that the rockwool is kept away from food and drink.

4.As a rockwood grow cubes manufacturer, What's the lead time?

About 10-15(normally) days for a 40HQ container.

5.Are rockwood grow cubes compatible with automatic irrigation and nutrient delivery systems commonly used in hydroponics?

Yes, rockwood grow cubes are compatible with automatic irrigation and nutrient delivery systems commonly used in hydroponics. However, it is important to note that rockwool cubes should be soaked in water before use to ensure that they are properly hydrated. Additionally, rockwool cubes should be flushed with water every few weeks to prevent nutrient buildup.

6.Can rockwood grow cubes be used in combination with alternative growing methods like aeroponics or deep water culture (DWC)?

Yes, rockwood grow 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.

7.About rockwood grow cubes,How to calculate the irrigation amount of nutrient solution?

In case of tomatoes, from planting to flowering: the irrigation amount is about 300-500ml / plant / day; From flowering stage to early fruiting stage: the irrigation amount is about 800-1200ml / plant / day; From early fruiting to harvest period: the irrigation amount is 1200-1500ml / plant / day, and the irrigation amount in full fruit period is about 1500-2000ml / plant / day. You can also bring out a rough calculation according to the shape and size of rock wool.

8.Is it possible to get samples of the rockwood grow cubes for you?

Yes, we can provide samples for your quality testing.

9.About rockwood grow cubes,What is the best time of for daily irrigation?

It depends on your region and season.
In case of similar climate conditions in Shanghai, it is recommended to start watering 2 hours after sunrise and stop watering 2-3 hours before sunset. Long term watering before sunset will lead to plant overgrowth. If necessary (in hot climate for example), please adjust your irrigation strategy in time to keep the water absorbed by plants consistent and grow evenly every day.

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