Which species of cannabis contains the most THC?
Cannabis Indica 
Cannabis Sativa
Cannabis Ruderalis
Cannabis Kush
 Some studies indicate that, on average, Cannabis sativa has higher levels of CBD compared to THC than C. indica. The effects of sativa are well known for its cerebral high, while indica is well known for its sedative effects which some prefer for night time use.[18] Both types are used as medical cannabis.
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Cannabis Indica 
Cannabis Sativa
Cannabis Ruderalis
Cannabis Kush
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