So many people grow in here in california (especially up north) that its pretty much guaranteed you could buy a oz of ANY two strains crossed, and it probably would have been grown outside too.

Not saying that really means this is blueberry x trainwreck, but theres no reason to believe it isnt.

although i take it your friend isnt from california . . . its not cali. california, occasionally cal(usually just in norcal and socal) or maybe cali-forn-i-a (pronounce the letters), but pretty much no cali. Not that I care what you call it, I just think its funny cause you usually hear people not from here calling it "cali" after they come because they think it makes them seem more familiar with it, when really it just shows their ignorance :P