G'day Rkon,
I can tell you as can anybody who has grown hemp or cannabis that its not possible to grow a crop outside in winter as it's an Annual plant and it requires x amount of light each day to grow, for example if you planted said plant in February by the end of March at the latest it would go to flower or seed regardless of the size of the plant and stop growing by the end of April as the days would be to short for it to continue