Why Stone Wool Comes in Different Sizes and Shapes?
6 October 2022
Choosing the best suitable substrate for cannabis cultivation
Producing sustainable and high-quality cannabis comes down to making the right choices, before, during, and after cultivation. Before cultivation, a considerate step-wise approach is taken in choosing the best equipment to successfully cultivate cannabis. First and foremost this starts with the choice of the most suitable substrate, as the choice of substrate will determine to what degree water and nutrients will be available to the plants, allowing for vigorous growth and healthy development.
The #1 substrate
Stone wool has been for a long time the #1 substrate of choice for growing cannabis and vegetables in high-tech cultivation facilities. In addition, looking at the most productive producers of high-quality cannabis are using stone wool substrates. Experienced growers are aware of the benefits of stone wool substrates, and how these can unlock the full potential of your cultivation facility and the genetics of the grown varieties. Primary advantages of cultivating cannabis in Cultiwool’s stone wool substrate include, but are not limited to – user-friendly characteristics, reduced pest, and disease pressure, direct availability and efficient use of water and nutrients, high water rendition capabilities at low moisture contents, and more. Further information concerning the story, benefits, and unique characteristics of Cultiwool’s stone wool products can be found in these articles.
Therefore, in order to maximize the yield and quality of the plants while minimizing the resource use and inputs, several products stone wool products were designed by the team of Cultiwool. The choice between these products categories should be made based on the crop phase;
Plugs for the propagation of cannabis
In order to create the most suitable conditions for the cuttings to root and develop a healthy rooting zone Cultiwool created the Cannabis Starter Plugs, as seen in the accompanied picture. Several products are available from the Starter Plugs, these slightly vary in size, allowing individual selection of the grower depending on their facility and production requirements. Successful propagation starts with high quality plugs for cloning or sowing. Cultiwool plugs are used for higher consistency, fast rooting throughout the entire plug and tapered bottom for improved air flow around the roots.
Our starter plugs come in different dimensions and packaging units.
Growing Blocks
These blocks, sometimes also known as cubes, are the preferable stone wool products in most of the cannabis cultivation stages; vegetative, flowering, and mother plants. The reason for that is the individual and separated root environment created when using one block per one cannabis plant, helps reduce the risk of infection, and promises equal absorption of water and nutrients between all plants. Each block has the same characteristics for uniform root and plant development. Making sure an even distribution of the WC and EC within the block. This creates easy WC management and root growth throughout the whole block. This allows for efficient use of water and nutrients.
Our growing blocks come in different dimensions and packaging units.
Growing Slabs
Growing Slabs are also available within the Cultiwool stone wool product line in different dimensions and packaging units. They allow for fast uptake of water in a larger substrate volume. This gives a wide control range to apply simple irrigation strategies to your crop. The combination of block and slab is important for easy root penetration into the slabs. The WC and EC are also distributed uniformly resulting in homogenous plant development. Firmness and slab structure guarantees a healthy root zone right until the end of the cultivation cycle. Especially mother plants are grown on slabs for continuous vigour and uniform growth.
Our growing slabs come in different dimensions and packaging units.
Want to know more?
On this website you will find more information on our stone wool substrates and instructions for optimum use! If you have any question, remark, or request, please feel free to contact us here, or via our Facebook and Instagram accounts.
More items
VPD & Root-Zone Balance – Why Climate Control Matters in Stone Wool Cultivation
Vapor Pressure Deficit (VPD) has become one of the most discussed parameters in modern greenhouse and indoor cultivation. It provides growers with a more precise way to understand how plants interact with their environment. Specifically, how temperature and humidity, along with leaf temperature, drive transpiration. While often discussed in the context of climate control, VPD also has a direct impact on root-zone management, especially when using high-precision substrates like stone wool. In this article, we will explore the technical fundamentals of VPD, how it influences plant physiology, and most importantly, how growers can align VPD management with irrigation strategies in stone wool to achieve optimal growth and consistency.
Advanced Nutrient & Crop Steering Techniques in Stone Wool Cultivation
Stone wool has become the preferred substrate for precision cultivation, offering growers unparalleled control over water, nutrients, and oxygen availability at the root zone. As controlled environment agriculture (CEA) advances, one of the most impactful strategies growers can adopt is crop steering. That is a data-driven approach to adjusting environmental and nutritional inputs to guide plant development toward desired outcomes. Whether targeting higher biomass, increased yield, or enhanced quality (such as flavor or cannabinoid concentration), crop steering techniques can transform results in both medicinal and food crop production.
Avoiding the Top 5 Mistakes When Growing in Stone Wool
Stone wool is a powerful and precise substrate that enables growers to fine-tune plant development with unparalleled control. However, with this precision comes the need for accuracy at every step of the growing process. At Cultiwool, we have seen how easily small mistakes can lead to big inefficiencies or lost yields, especially in high-density, high-value crops like cannabis. Whether you are an experienced cultivator scaling operations or just starting with stone wool, here are the five most common mistakes we see, and how to avoid them.
Where can I find Cultiwool?
Discover more about our Cultiwool network