Rock wool is seen as one of the best substrates in soilless cultivation because of its special structure and excellent physical/chemical properties. It provides a good root environment with sufficient fertilizer, water, sterility and air supply for plants.

UPuper® is a leading manufacturer of rockwool substrate in the entire Asia Pacific region, including grow block,Rockwool cubes,Growing Cubes,propagation plug,Grow Plug,Seedling plug, etc.The company also set up rock wool substrates R & D center that cooperates with domestic universities and institutions and large experiment base, and is equipped with professional experimental greenhouse and scientific researchers to continuously promote the development of new products in the application field of rock wool substrates.

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



UPuper® Rock wool does not carry, absorb or consume any water or nutrients. Meanwhile, grow cubes for weed does not prevent crops from absorbing nutrients. The elements given by water and fertilizer can be totally provided to plants. Growers do not need to consider the various effects of the substrates itself on crops.
People can accurately mix the nutrition solution required by crops in each growing stage. It is conducive to the data collection, analysis and management to optimize planting strategies. UPuper® rock wool’s EC and pH values are stable, which is convenient to set a unified irrigation scheme to have an easier management, and keep the consistent growth of crop roots.

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.

grow cubes for weed---FAQs Guide

1.As a grow cubes for weed manufacturer,What is soilless cultivation?
2.What environmental conditions, such as temperature and humidity, are optimal for using grow cubes for weed in indoor or outdoor growing setups?
3.Are there rockwool grow cube products specifically designed for vertical gardening or living walls?
4.As a grow cubes for weed manufacturer, What's the lead time?
5.What are rockwool grow cubes?
6.Can grow cubes for weed be used in conjunction with other growing media or as part of a multi-stage cultivation process?
7.What is the water retention capacity of grow cubes for weed, and how does this impact plant hydration and growth?
8.Can grow cubes for weed be used in combination with traditional soil to improve aeration and drainage in potted plants?
9.As a grow cubes for weed manufacturer,UPuper® Rock wool recycling service
10.Can grow cubes for weed be used for cloning and propagating plant cuttings, and what advantages do they offer for this purpose?

1.As a grow cubes for weed 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.

2.What environmental conditions, such as temperature and humidity, are optimal for using grow cubes for weed in indoor or outdoor growing setups?

The optimal environmental conditions for using rockwool grow cubes in indoor or outdoor growing setups are temperatures between 65-75°F (18-24°C) and humidity levels between 40-60%. It is important to maintain these conditions to ensure the best results for your plants.

3.Are there rockwool grow cube products specifically designed for vertical gardening or living walls?

Yes, there are rockwool grow cubes specifically designed for vertical gardening and living walls. These cubes are designed to provide optimal air and water retention, as well as support for the plants. They are available in various sizes and shapes to fit any vertical gardening or living wall setup.

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

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

5.What are rockwool grow cubes?

Rockwool grow cubes are a type of growing medium made from melted basalt rock and chalk that is spun into fibers and then compressed into cubes. They are commonly used in hydroponic systems and are known for their excellent water retention and air porosity. Rockwool cubes are also pH neutral, making them ideal for growing a variety of plants.

6.Can grow cubes for weed be used in conjunction with other growing media or as part of a multi-stage cultivation process?

Yes, grow cubes for weed 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.

7.What is the water retention capacity of grow cubes for weed, and how does this impact plant hydration and growth?

grow cubes for weed 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.

8.Can grow cubes for weed be used in combination with traditional soil to improve aeration and drainage in potted plants?

Yes, grow cubes for weed 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.

9.As a grow cubes for weed manufacturer,UPuper® Rock wool recycling service

UPuper® Rockwool cubes can be recycled. Used UPuper® rock wool can be recycled back to the production lines. After separating and melting with other raw materials. Those used products can be made into new rock wool. The products that made of recycled materials have no quality difference from the new ones, and can be re-applied to thermal insulation, fire prevention and noise reduction in the fields of construction, industry and ships.

10.Can grow cubes for weed be used for cloning and propagating plant cuttings, and what advantages do they offer for this purpose?

Yes, grow cubes for weeds 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.

Tags: mini rockwool cubes,growing plugs,stone wool seedling plug,grow cube plants,rockwool cubes gardening,planting rockwool cubes