Cannabis mold is unpleasant and dangerous, especially when you consider that it occurs on the leaves of plants, usually towards the end of the life cycle, when growers are already looking forward to harvesting. Mold is able to adapt to the characteristics of any climatic zone, and at the same time feel good, while the plants will suffer significantly.
And if you have already seen mold, it is not so easy to deal with it! Therefore, it is better to arm yourself in advance with the knowledge of how to treat plant growths from the fungus, and even better – how to prevent its appearance.
Why does mold appear?
Molds are microorganisms that begin to multiply actively in favorable conditions for themselves. Risk factors for the appearance of mold on marijuana are insufficient lighting, high levels of humidity, temperatures around 15 ° C and below.
Excessive watering. One of the most common reasons. If the grower floods the plants, they will weaken and lose their natural protective barrier against mold growth;
Excessive fertilization of the soil. Many plants are sensitive to overdose. The pistils are affected in flowers, and this serves as a fertile soil for the reproduction of the fungal colony;
High humidity level. In most cases (unless we are talking about special varieties that are resistant to high humidity), the humidity level in the atmosphere or in the grow room should not exceed 50%. Also, when cultivating indoors, you need to take care of good ventilation;
Jumps in air temperature and its decrease. If the thermometer drops below + 16 ° C, for most varieties of cannabis it will be a stimulus to the development of mold. It is especially dangerous if the decrease in temperature takes place against the background of an increase in the level of humidity, and this is what often happens when grown in an outdoor area in a temperate climate, when fogs and frosts can appear on autumn nights;
Insect attacks. This factor is negative in itself, but, in addition to the obvious harm to plants, it can also stimulate the growth of mold bacteria;
Dense buds. Keep in mind that the denser the bump, the more difficult it is to find mold in it. In addition, varieties with the tough buds of the indica genetics are more susceptible to fungus than sparse sativa buds.
How to treat?
Remove leaves already affected by mold. If the plant is severely affected, then it will be justified to get rid of it so that spores do not fall on neighboring plants. Tough, but necessary!
In case of damage to red mold, replacing the topsoil helps well. After removing the affected soil, it will be nice to scatter crushed activated carbon over its surface, which prevents the multiplication of mold spores, then pour a new layer of earth;
Treat the plants with a solution containing alcohol. This will help, but only at an early stage of infection;
Carry out treatment with fungicidal compositions. After spraying, you need to treat it with water after a while to wash off the solution;
Disinfect the bushes by spraying with a solution of copper sulfate in a proportion of 5 grams per 1 liter of water.