Outdoors is still using light cycles.....so when your hours of light start diminishing closer to 12 hours then I would say use some bloom formula. There are soo many variables that without strain specific info and growing area info it would be hard to guess, but you cannot go wrong really with giving it bloom formula a tad bit earlier then needed just don't over do it until you can see bud growth/sites throwing hairs like nobody's biz.
frostedwonder Reviewed by frostedwonder on . Pre-flower and Flower question. How do you tell when a plant has transitioned from pre-flower to full blown flower? Rating: 5