i Have hgrown outdoor the past couple of years but in 07 my herb got taken except one and it was a male. So this winter i am hoping to grow in my garage attic it is about 2.5-3ft tall and i gionna make it small about 27 inches wide and 7 feet deep with doors on each end im thinkin of seperating in the middle for veg room and bud room. my main concern is the weather how should i keep the room at the right temp??