I covered the plant at night to get a 12 hour night cycle starting in early August. The natural 12 hour daylight hours does not start here till September 15. Late October is way to cold around here to be finishing plants. I seemed to use a tarp that allowed to much light to penetrate onto the plant. The plant began to stretch between bud sights when it began flowering. I will use a better tarp right from the beginning next year.