Trainwreck! Sounds like exactly what your looking for. Its one of the few, Sativa dominant crosses I really like! Sweet Trainwreck for an auto, and the Humbolt Seed Organization's Trainwreck for a photo period. They yield well too and if you smoke a little too much you'll know it!
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i ran out last night mate. gonna see if i can last the 17 weeks till mine is ready though. got a bit pollen the other day and i just cant go back to it after smoking my own buds. pretty much just smoked pollen the last 10 years but i think ive finally been converted. just need to find a strain that suits me a bit more. happy high, thought inducing, good for playing guitar and doesnt kill my sex drive but will still fuck me up a bit when i double dose at night time. i dont ask a lot lol.