We stock a large range of Rockwool products that are ideal for different stages of indoor growing. Rockwool is the ideal hydroponic media as it holds the perfect ratio of air to water and allows precision control of irrigation and maximum nutrient absorption. In our experience, we’ve seen impressive results with massive growth rates and huge yields of high quality.
Rockwool is available in a variety of forms including cutting and transplant blocks, loose-fill mini cubes for filling pots and long slabs to be used in drip irrigation systems. It can be used throughout the growing process and its quick-drying characteristics help prevent disease and mould issues.
For more information about Rockwool and how to use it, give us a call today on 0114 3221440
Types of Rockwool Growing Cubes
Rockwool multi-block: These small v-shaped individual cells are perfect for the propagation of seeds and cuttings before blocking onto larger growing blocks.
Rockwool mini-block: Similar to multi blocks, only Rockwool mini blocks are square and wrapped in UV resistant plastic the help maintain moisture.
Rockwool grow block: Ideal once the roots have sprouted, simply put the multi or mini block inside or on top of a grow block slab for the plant to root.
Rockwool slabs: Let roots quickly grow throughout the volume of the slab and provide fantastic water and nutrient distribution – an excellent choice for growing fruits and vegetables.
Rockwool grow cubes: These tiny yet versatile cubes can be used alone as hydroponic media in pots and containers, providing high air to water ratio and bumper yields.
Growing with Rockwool FAQ
What is Rockwool?
Rockwool is primarily made of molten basalt rock. It’s spun in a similar way to candy floss and shaped and compressed into cubes, blocks and slabs. It doesn’t contain organic material, making it immune to decomposition at the hands of mould and fungi.
What is Rockwool used for?
It’s also widely used in horticulture for the production of herbs, flowers and fruits. Rockwool is an easy growing media to work with, giving growers total control of feeding the crop the right nutrients. And the excellent root zone technology stimulates the growth and quality of the product. It's also used as insulation in residential, industrial and commercial properties and as a spray-on fireproofing treatment.
What are the advantages of growing in Rockwool?
Clean: One of the many advantages of growing in Rockwool is that it arrives clean and sterile. Because Rockwool is manufactured from basaltic rock, it doesn’t contain any diseases, pests, weeds or chemicals, making it ideal for growing.
Control: As Rockwool doesn’t contain any organic matter, it’s free from nutrients and organic compounds. This gives you complete control to deliver a balanced feed solution to provide the plants with all the nutrition they need to thrive.
Drainage: Rockwool has the ability to drain excess water extremely quickly and helps prevent overfeeding issues. It allows plants to hydrate while increasing the amount of oxygen that can circulate in the roots – perfect for excellent plant growth.
Reusable: It’s actually possible to reuse Rockwool many times when growing indoors. As it’s made of rock, it doesn’t break down over time. So, providing that you clean it properly after using it, you can regrow fruit and veg in Rockwool over and over again.
Is Rockwool a renewable resource?
Rockwool is a product processed from the Earth’s volcanic rocks and can be considered an ecologically friendly, renewable resource. You regrow fruit, veg and herbs in Rockwool many times, helping save money on the growing substrate and delivery fuel. Then, once its use is over, you can shed the Rockwool and put it in your compost.
Is Rockwool biodegradable?
Rockwool is not biodegradable. If you throw used Rockwool in a landfill, it will sit there forever like a rock. However, adding shredded Rockwool to your compost heap aerates the compost and can speed up the process by up to thirty per cent.
Is Rockwool harmful?
Rockwool isn’t a nice product to handle as it can cause irritation of the eyes and skin, and cause breathing issues. So, it’s important to wear appropriate safety equipment when handling Rockwool. For instance, it’s a good idea to wear gloves, long sleeves and a mask.