In nature, within the mesosphere, and more specifically in that portion of the soil where roots are, symbiotic relationships are formed with fungi. Among these, there are some that are particularly beneficial for plants, and of course, for the cannabis plant. One of the most interesting surely is the Trichoderma Harzianum, which has been studied for more than 70 years and is utilized in many indoor or outdoor grows. “The Trichoderma Harzianum forms a mutual exchange relationship with the plant,” says Davide Agostini, grower with ReLash Lab. “The Trichoderma lives between the soil and the roots, and it colonizes them.”
A beneficial fungus
ReLash Lab is a medical cannabis producer based in Granada, Spain. The company specifically tackles the medical market, and strives for growing the safest and cleanest cannabis for patients. In order to achieve that, it is crucial to address cultivation issues in the proper way, as the cannabis industry is highly regulated and nothing can be left to chance – especially when people’s health is at stake. “This fungus works beautifully as a crop protection, and not only is it an organic solution, but it also boosts plant’s growth and health.” But how does this work?
“Once the fungus has colonized that area, it offers protection to the plant: it avoids the proliferation of other harmful fungi. Therefore, its main purpose is protection: it absorbs some nutrients, and it protects the plant in return.”
Accelerator of primary meristematic tissues
According to Davide, the Trichoderma needs very few carbs to live, and it grows very rapidly. “It can grow up to 15mm per day, and it can withstand temperatures in water up to 36 degrees,” he points out. Additionally, the fungus works as an accelerator of the primary meristematic tissues. “These tissues can be found on the ends of the roots. They split up and facilitate the cellular development, which is supported by the fungus through the release of a hormone that help the roots growth.”
Therefore, the Trichoderma helps the plant to grow roots faster, and it enhances the plant’s immune system. “It also improves the duration of the substrate,” Davide explains. “We grow cannabis hydroponically, and inert substrates are usually utilized in operations like this. However, through the Trichoderma, you can improve the biosphere, which is extremely positive as it facilitates the growing enormously.”
Successfully used in different crops
Davide further explains that this fungus has been successfully used for a number of crops such as tomatoes, cucumbers, and beans. “Over time, research on this fungus advanced, and it reached a point where the Trichoderma has been stabilized and can be used with no dangers. However, we keep doing research ourselves, as only by observing you can fully understand how things work.” And indeed, Davide has noticed that plants where the fungus is present look healthier, stronger, with a brighter green color. “Through the use of this beneficial fungus, we don’t have to use any fungicide or chemical products. This is extremely important for us, as we can offer our patients an extremely clean product.