Rockwool, sometimes called mineral wool, is an insulating material made of basalt, which usually comes in different shapes, sizes and densities depending on its intended use, such as cubes for plant cultivation. They are especially popular for sowing seeds and propagating cuttings.

The 4 inch rockwool cubes refers to the rock wool matrix that is 4 inches (about 10 cm) in length, width and height. There are also other different heights, usually ranging from 4 to 6 inches (10 to 15 cm). It can be used in various applications, such as vegetable seedlings, flower cultivation, cannabis cultivation, etc.

They have excellent water-retaining properties, ensuring plants receive continuous water and nutrients.

The rockwool cubes have many pores that allow air to fill the balance and provide oxygen to the roots.

Here are some parameters for a 4-inch rockwool cubes:

      Single size: 4 *4 *4 (L*W*H（inch))

      Hole Size: φ1",H1.38"

      Grooves: Have

      Film: Have white film wrapped.

      PH<7.5

      Organic matter content<1.5%

The rockwool cubes ensure that the plants remain close to ambient temperature without additional cooling or heating due to the low thermal conductivity of the material. In addition to applications in the construction industry, rockwool cubes are also frequently used in the field of gardening.

Gardeners often use small 4-inch rockwool cubes to encourage plant root and stem growth. These cubes act as supporting platforms on which plants can grow and spread their roots freely, promoting growth. Seeds and cuttings can be easily grown in cubes, and they are especially useful for window frames and other plant containers. Since these cubes have excellent water retention properties, they are also convenient for propagating many different varieties of plants. Once the plants have grown, the seedlings or cuttings can be easily transplanted into larger hydroponic systems or traditional soil.

Rockwool blocks are a popular choice for hydroponic systems, which involves growing plants without soil. The pH is neutral and has little effect on the pH level of the nutrient solution in the hydroponic system. Inert materials provide a clean and sterile environment for plant roots.

Rock wool is considered an environmentally friendly material as it can be recycled and reused for other applications.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.

However, when using rock wool cubes, you need to pay attention to some issues:

When cultivating plants, proper watering and nutrient application guidelines must be followed. Properly saturated rock wool blocks and a balanced nutrient solution are critical to promoting healthy plant growth and maximizing yields. Additionally, gloves and precautions are recommended when handling rock wool to avoid irritation from the fine fibers.