Tall Tall plant, just started flowering, how much longer

Wish I had a digital ( maybe I will gift myself with one for xmas ;)

But this one plant of mine is very Tall and is *just* flowering. It is almost 5ft. I am not sure as to the strain, though it is tall, not bushy, with thin, not fat fan leaves.

Anway, approx how much longer till it's finished? Also since all my plants are in pots on my balcony, when the frost comes, should I pull them inside for overnight, or move them to my outdoor greenhouse till they are ready?

THX :D

I have 3 in that same situation, they just started budding a week ago, i would guess at least a month. mine are about 7 feet tall sativa breed. can't tell you about the frost stuff though.

SG