Elevated atmospheric moisture content significantly impacts the cultivation of cannabis plants outdoors. Such conditions foster an environment conducive to the proliferation of fungal diseases, like bud rot (Botrytis cinerea) and powdery mildew, which can devastate entire crops. Additionally, persistent dampness hinders transpiration, the process by which plants release water vapor, ultimately affecting nutrient uptake and overall plant health. An instance of this is the rapid spread of mold within dense flower clusters during prolonged periods of rain and high dew points.
Understanding the implications of excessive moisture is crucial for successful outdoor cannabis cultivation. Mitigating the risks associated with damp air leads to healthier plants, larger yields, and higher quality product. Historically, cultivators in regions with naturally humid climates have developed specialized techniques, such as selecting mold-resistant strains and employing strategic pruning methods, to combat these challenges. Recognizing these issues is the first step toward implementing effective preventive measures.