No1. growing

Top feature
Donut ring
  • Easy and uniform distribution of water
  • Increased water and fertilizer use efficiency
  • Improved plant cultivation & growth

The Cultiwool substrate

A homogeneous and reliable stone wool substrate to grow a healthy and vigorous crop. That is what Cultiwool stands for. The Cultiwool substrate, available in various types and sizes, is distinguished by a strong water-absorbing capacity, uniform water distribution in the block and a better water flow under the substrate. Plus, the products are offered at competitive prices.

Cultiwool helps you and your plants grow. We do this by combining European quality, innovation and knowledge in a complete range. We focus on stone wool products of the highest quality with an eye for the smallest detail, but our strength lies in the collaboration with specialized partners in the field of technology and advice. Benefit from the flexibility and drive of a start-up in combination with the knowledge, skills and experience of a leader. All in one, together for your success.

More about us Download our product leaflet

Our stonewool products


Starter plugs


Growing blocks


Growing slabs

Take advantage



A homogeneous stone wool product is essential for unrestricted and regular root growth. Cultiwool stonewool produced in Europe is the highest quality stonewool in the market for hydroponic systems. Stonewool used in Cultiwool is certified by RHP. Therefor Cultiwool offers maximum uniformity to optimally control water and nutrient application. The result is a uniform crop that will result in higher yields, better quality, and less energy usage.


Fast uptake of water

Reliable initial saturation is key to avoid dry spots in the substrate. Dry spots will create salt build up which results in an unbalanced block and should be avoided at all times. Cultiwool substrates have a faster and easier water uptake due to the high quality of stonewool.
This explains why stonewool used in Cultiwool is the only stonewool board in the highest category of RHP related to initial wetting-up.


Total control

Water, EC and pH distribution can be very well controlled with Cultiwool rock wool substrates, both vegetative and generative, depending on the needs of the crop and at different moments during the cultivation.


Unique waterdistribution

Cultiwool is the first to introduce – as quality leader – the donut ring on big blocks to improve the water distribution.
Already for many years Cultiwool has the highly appreciated drain grooves under the big
blocks to improve the waterflow under the block, specially on tables or small gutters.

Latest news

Cultiwool substrate news


Eden Horticulture and HydroGarden are Also on Board!

The more distributors choose to work with a company, the better people know the products of this company! Cultiwool has many distributors all over the world like in Europe, Canada, and the USA. And now, we are excited to officially announce the collaboration between Cultiwool and Eden Horticulture and HydroGarden in the United Kingdom!


The Team of Cultiwool is Expanding!

Cultiwool very is happy to announce the new addition to our team; Meet Ryan Wankel, our new technical sales manager for North America!


Here come the GrowCubes! New Product Launch

Starting from this day, Cultiwool is offering its clients the stone wool GrowCubes.


Where can I find Cultiwool?

Discover more about our Cultiwool network