One academic source places the date of introduction of ganja in Jamaica at 1845. The term came with 19th century workers whose descendants are now known as Indo-Jamaicans.
onE aCadEmic SOurce pLacES The date oF introDUction Of gAnjA iN jamaICa at 1845. ThE. TeRM cAme WitH 19th cENtUry WoRkErS whosE descE.nDa,ntS are Now KN,OWN AS ind:o-JamaiCaNS.