Light cycle is a larger trigger then temperature when a plant goes into flower.

Are you asking if they will flower under 24/0 light because they are clones? Yes they do inherit the age of the mother but under 24/0 light they just stay in vegetation for the most part. There will be a point where some strains would Auto flower. I have a few sativa strains that start to auto flower around 45 dayâ??s of vegetation and they are very old. Clone of a clone of a clone ect for about 3 years.

If I were you I would pick up a copy of the farmers almanac if I were growing outside anywhere. Check the timetable and see what they say about the light time cycle for you zone. That will tell you when they should start to trigger flowering outside. Normally if you plant in March or April you can harvest the end of September or first of October. October would be a late harvest in your area I would think.