Shanghai ABM rock wool Dafeng Co., Ltd began to develop rock wool substrates start from the 1990s. So far, it has a history of more than 20 year and been registered in more than 20 countries, UPuper® sales footprints cover all over the world and has been highly recognized by growers locally and abroad.

Our main products are Rockwool cubes,Grow Plug,Growing Cubes,grow block,propagation plug,grow slab, etc.After more than 20 years of continuous exploration, R & D and practical application in the field of substrates, after three generations of improvement, UPuper® combined with the actual needs of growers, rock wool substrates has been developed into different items for different application fields such as agriculture facility, three-dimensional greening and potted plants to cover much more industries.

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



pine seedling plugs have a strong ability of water saving and fertilizer retention. It provides an excellent growth environment for crop roots. The internal three-dimensional network fiber structure makes the nutrient distribution more evenly, which is conducive to the roots extension and growth. A developed root system is the precondition of high yield and excellent fruit quality.
UPuper® Rock wool has firm structure and is not easy to deform without scattering, so It will not cause any damage to crops root while transplanting, the survival rate will increase, which is also helpful to grow large seedlings. It can help to realize the time to market  in advance or later seasons to bring higher yield, quality and economic benefits.

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.

pine seedling plugs---FAQs Guide

1.Are there specific tools or accessories designed for working with pine seedling plugs, such as hole punches or plant supports?
2.As a pine seedling plugs manufacturer, What's the lead time?
3.As a pine seedling plugs manufacturer,Why use soilless cultivation?
4.Can pine seedling plugs be used in combination with traditional soil to improve aeration and drainage in potted plants?
5.About pine seedling plugs,Why should we open some drains on the rock wool cultivation strip?
6.How do pine seedling plugs accommodate different irrigation methods, including drip systems, flood and drain, or ebb and flow?
7.Are pine seedling plugs pH-neutral, and do they require any adjustments before use?
8.Do pine seedling plugs have different densities or compositions for use in various growing stages, such as seed germination or flowering?
9.What are the common challenges or issues that growers may encounter when using pine seedling plugs, and how can they be mitigated?

1.Are there specific tools or accessories designed for working with pine seedling plugs, such as hole punches or plant supports?

Yes, there are several tools and accessories designed specifically for working with rockwool grow cubes. These include hole punches, plant supports, and trays for holding the cubes. Additionally, there are tools for cutting and shaping the cubes, as well as tools for transplanting seedlings from the cubes into larger containers.

2.As a pine seedling plugs manufacturer, What's the lead time?

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

3.As a pine seedling plugs manufacturer,Why use soilless cultivation?

Soilless cultivation is the most advanced cultivation technology in modern agriculture. From cultivation facilities to environmental control, the whole process can be monitored and regulated according to the needs of crop growth and development. It can realize early maturity and high yield of crops; Production of pollution-free products; greatly improve working conditions, save labor and reduce labor intensity; Save water and fertilizer; Avoid soil continuous planting barriers; it has no regional restrictions and can make the space fully used; so that contribute to the automation and intelligence of cultivation.

4.Can pine seedling plugs be used in combination with traditional soil to improve aeration and drainage in potted plants?

Yes, pine seedling plugs can be used in combination with traditional soil to improve aeration and drainage in potted plants. Rockwool is a lightweight, porous material that helps to improve drainage and aeration in soil, allowing for better root growth and healthier plants. It can also help to retain moisture in the soil, which is beneficial for plants that require more frequent watering.

5.About pine seedling plugs,Why should we open some drains on the rock wool cultivation strip?

The drain is opened at the bottom of both ends of the cultivation strip. The drain is opened to allow the normal discharge of excess water and fertilizer to keep the EC Value in the planting strip stable. The location of drainage holes and the correct irrigation amount directly affect the distribution of water and EC in the cultivation strip. Be sure not to set additional drainage holes in the planting strip when you use them, otherwise it will change the planting strip drainage mode, which may be unfavorable to the plant roots in some areas in the planting strip. The surplus water and fertilizer will flow into the diversion tank and return to the irrigation system for recycling after disinfection and other process. It can not only solve the problem of water and fertilizer, but also protect the environment.

6.How do pine seedling plugs accommodate different irrigation methods, including drip systems, flood and drain, or ebb and flow?

pine seedling plugs 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.

7.Are pine seedling plugs pH-neutral, and do they require any adjustments before use?

pine seedling plugs 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.Do pine seedling plugs have different densities or compositions for use in various growing stages, such as seed germination or flowering?

Yes, pine seedling plugs 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.

9.What are the common challenges or issues that growers may encounter when using pine seedling plugs, and how can they be mitigated?

UPuper is a professional pine seedling plugs 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.

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