Why does a Cannabis plant produce THC? This question is brought up drawing an analogy to nicotine in tobacco, where nicotine is developed by tobacco plants as a pesticide. Is THC a pesticide as well? I'm imagining that marijuana plants don't have rheumatoid arthritis.

  • $\begingroup$ It may also act as an insulation barrier for the plant to protect it from the cold. $\endgroup$
    – Technetium
    Jan 27 '16 at 3:37
  • $\begingroup$ Phytocannabinoids are found in an exceedingly wide range of plants, if that matters. $\endgroup$ Jan 27 '16 at 5:55

Apparently it is used by Cannabis sativa as a type of sunscreen as it absorbs UV light https://www.reddit.com/r/trees/comments/2v79dv/science_sunday_13_wait_why_does_cannabis_have_thc/



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