In the post-harvest process of cannabis, drying plays a vital role. It has a significant impact on the quality, potency, and flavor of the final product, and temperature control is a crucial factor.
The ideal temperature range for drying cannabis is relatively low. Once it exceeds 80°F (27°C), it enters the category of high-temperature drying, which brings a series of problems.
High temperature often leads to uneven drying of cannabis. If the temperature in the drying room rises to 90°F (32°C), the outer layer of the cannabis buds will lose moisture quickly as it absorbs heat more easily. Before long, the outer layer becomes dry and brittle, like a thin hard shell. However, the inner layer still retains a significant amount of moisture. As a result, the buds seem like a contradiction, with a hard outer part and a wet inner part. This not only reduces the appearance but also causes headaches during storage and subsequent processing. The quality of the entire batch of cannabis will also become uneven.
In some professional cannabis cultivation facilities, such as Chengfei Greenhouse, the control of drying temperature is extremely strict. They are well aware that even a slight deviation in temperature can make a huge difference in the quality of cannabis in such a professional environment.
High temperature can also cause the degradation of cannabinoids and terpenes. THC is responsible for the psychoactive effect of cannabis, CBD has medicinal properties, and terpenes give cannabis a variety of unique aromas and flavors. Research shows that the THC content in cannabis samples dried at 95°F (35°C) is significantly lower than that in samples dried at 65°F (18°C). This is because high temperature makes THC molecules decompose and transform into other less potent compounds. Take myrcene as an example. It can originally bring a charming musky and earthy smell to cannabis, but under the "torture" of high temperature, it will evaporate or chemically change. A cannabis strain with a strong citrus terpene fragrance may lose its fresh fruity aroma and become dull after high-temperature drying. The potency and sensory experience of the product will also be poor.
In addition, high-temperature drying creates opportunities for the growth of mold and mold spores. When the drying environment reaches a temperature of 85°F (29°C) and has a relatively high humidity, the outer layer of cannabis may seem dry, but the inner layer still hides moisture. This warm and humid environment is like a "hotbed" for mold spores. In a few days, those annoying mold spots will appear on the buds. Moldy cannabis is not only unappealing but also may cause health problems such as respiratory issues and allergic reactions if accidentally consumed. The harm is even greater for those with weaker immune systems.
To ensure a good drying process of cannabis, the temperature is preferably controlled between 60°F (15°C) and 70°F (21°C). In this relatively cool and stable temperature range, cannabis can dry slowly and evenly, thus maximizing the retention of its quality, potency, and flavor. Of course, air circulation and humidity control during the drying process should never be ignored.
Understanding the appropriate temperature range for drying cannabis is of great significance for both cannabis growers and users. As long as the temperature is steadily controlled below 80°F (27°C), preferably within the range of 60°F - 70°F (15°C - 21°C), there is a chance to harvest high-quality, potent, and flavor-rich cannabis products.
#Cannabis Drying Temperature#Cannabis Quality#High-Temperature Drying Hazards# Optimal Cannabis Drying Temperature#Cannabis Post-Harvest Processing
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Post time: Jan-17-2025
