Cannabis plants contain a wide variety of complex compounds including phytocannabinoids, terpenoids and flavonoids, found mainly in the inflorescences. Major phytocannabinoids like CBD and ∆9-THC have beneficial effects on human health. It is well known that variations in their profiles are connected to growth, light quality, humidity, the use of pesticides, harvesting and especially post-harvesting, like improper drying procedures that can facilitate fungal and microbial growth. Mass spectrometry is the tool of choice for the analysis of all these biologically active compounds along with tha