Shanghai ABM rock wool Dafeng, a professional production and export company, is a manufacturer that integrates design and production. The company is headquartered in Hongqiao CBD, Shanghai, and its production base is located in Dafeng District, Yancheng City, Jiangsu Province. It covers an area of over 233000 square meters and has a total investment of 100 million US dollars.

Our main production and export products are as follows: grow slab,Seedling plug,propagation plug,Grow Plug,propagation block,Growing Cubes, etc. Our products have a wide range of applications in various fields. The company has also established a research and development center for rock wool matrix in cooperation with domestic universities and large-scale experimental bases, equipped with professional experimental greenhouses and researchers, continuously promoting the development of new products in the field of rock wool matrix applications.

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



rockwool propagation blocks 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.


Individually wrapped cubes hold the rockwool’s shape and prevent algae growth.
Easy to transport without hurting the roots and can improve transplanting efficiency.

rockwool propagation blocks---FAQs Guide

1.Do rockwool propagation blocks have different densities or compositions for use in various growing stages, such as seed germination or flowering?
2.What sizes and shapes do rockwool propagation blocks come in, and how do these variations affect their applications?
3.As a rockwool propagation blocks manufacturer,What is soilless cultivation?
4.About rockwool propagation blocks,How to calculate the irrigation amount of nutrient solution?
5.Can rockwool propagation blocks be used in conjunction with other growing media or as part of a multi-stage cultivation process?
6.What applications can rockwool propagation blocks be used for?
7.Are rockwool propagation blocks pH-neutral, and do they require any adjustments before use?
8.What are the common challenges or issues that growers may encounter when using rockwool propagation blocks, and how can they be mitigated?
9.Can rockwool propagation blocks be used in combination with alternative growing methods like aeroponics or deep water culture (DWC)?
10.How do you monitor and maintain proper moisture levels within rockwool propagation blocks throughout the plant's growth cycle?
11.Can rockwool propagation blocks be used for cloning and propagating plant cuttings, and what advantages do they offer for this purpose?
12.About rockwool propagation blocks,What is the best time of for daily irrigation?
13.About rockwool propagation blocks,What is the minimum purchase?
14.As a rockwool propagation blocks manufacturer,What's the term of payment?
15.What is the composition and material of rockwool propagation blocks, and how do they compare to other growing mediums like soil or coco coir?

1.Do rockwool propagation blocks have different densities or compositions for use in various growing stages, such as seed germination or flowering?

Yes, rockwool propagation blocks can have different densities and compositions for use in various growing stages. For example, some rockwool cubes are designed specifically for seed germination, while others are designed for flowering. The density and composition of the rockwool cubes can vary depending on the type of plant being grown and the desired outcome.

2.What sizes and shapes do rockwool propagation blocks come in, and how do these variations affect their applications?

rockwool propagation blocks come in a variety of sizes and shapes, including cubes, slabs, and blocks. The size and shape of the cube will affect the application, as different sizes and shapes are better suited for different types of plants. For example, cubes are great for starting seeds, while slabs are better for larger plants. Blocks are ideal for hydroponic systems, as they provide more surface area for the roots to grow. The shape of the cube also affects the amount of air and water that can be held, which can be beneficial for certain types of plants.

3.As a rockwool propagation blocks manufacturer,What is soilless cultivation?

Soilless cultivation is a method of cultivating plants without natural soil nor use compound fertilizer and similar compound fertilizer based on soil. It is a new method that only uses nutrient solution to support for plant growth or various cultivation substrates that can replace soil and are suitable for plant growth. Soilless cultivation can be divided into fog cultivation, water cultivation and solid substrate cultivation. UPuper® Rock wool substrate belongs to solid substrate cultivation.

4.About rockwool propagation blocks,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.

5.Can rockwool propagation blocks be used in conjunction with other growing media or as part of a multi-stage cultivation process?

Yes, rockwool propagation blocks can be used in conjunction with other growing media or as part of a multi-stage cultivation process. Rockwool cubes are often used in hydroponic systems as a medium for starting seeds or cuttings, and can be used in conjunction with other growing media such as perlite, vermiculite, and coco coir. Rockwool cubes can also be used in multi-stage cultivation processes, such as in aeroponic systems, where the cubes are used to start the seedlings and then transferred to a larger growing medium.

6.What applications can rockwool propagation blocks be used for?

rockwool propagation blocks can be used for a variety of applications, including hydroponic gardening, seed starting, cloning, and propagation. They are also commonly used in aeroponic systems, as well as for growing mushrooms.

7.Are rockwool propagation blocks pH-neutral, and do they require any adjustments before use?

rockwool propagation blocks are generally pH-neutral and do not require any adjustments before use. However, it is recommended to check the pH of the cubes before use to ensure they are at the desired level.

8.What are the common challenges or issues that growers may encounter when using rockwool propagation blocks, and how can they be mitigated?

UPuper is a professional rockwool propagation blocks manufacturer and may encounter these issues. We provide corresponding suggestions:
1. Poor drainage: Rockwool cubes can become waterlogged if not properly drained. To mitigate this, growers should ensure that the cubes are placed in a tray with adequate drainage holes and that the cubes are not over-watered.
2. pH imbalance: Rockwool cubes can become too acidic or alkaline if not properly managed. To mitigate this, growers should regularly check the pH of the cubes and adjust as needed.
3. Nutrient deficiencies: Rockwool cubes can become nutrient deficient if not properly managed. To mitigate this, growers should regularly check the nutrient levels of the cubes and adjust as needed.
4. Pest infestations: Rockwool cubes can become infested with pests if not properly managed. To mitigate this, growers should regularly inspect the cubes for signs of pests and take appropriate action if necessary.

9.Can rockwool propagation blocks be used in combination with alternative growing methods like aeroponics or deep water culture (DWC)?

Yes, rockwool propagation blocks 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.

10.How do you monitor and maintain proper moisture levels within rockwool propagation blocks throughout the plant's growth cycle?

UPuper has many years of experience in this industry and can share with you these:
1. Monitor the moisture levels of the rockwool cubes regularly. Use a moisture meter to measure the moisture content of the cubes.
2. Adjust the watering schedule accordingly. If the cubes are too dry, water more frequently. If the cubes are too wet, water less frequently.
3. Use a humidity dome or tray to help maintain proper moisture levels.
4. Consider using a hydroponic system to provide a more consistent moisture level.
5. Add a layer of perlite or vermiculite to the top of the rockwool cubes to help retain moisture.
6. Consider using a fan to help circulate air and reduce humidity.

11.Can rockwool propagation blocks be used for cloning and propagating plant cuttings, and what advantages do they offer for this purpose?

Yes, rockwool propagation blockss 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.

12.About rockwool propagation blocks,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.

13.About rockwool propagation blocks,What is the minimum purchase?

The MOQ is one carton.

14.As a rockwool propagation blocks manufacturer,What's the term of payment?

T/T, Paypal, Credit card etc.

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

rockwool propagation blocks 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.

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