temp and flowering..

does the temp have anything to do with flowering? the top half of my green house tent is way hotter than the bottom half, and my small plants which are about 2-3 feet tall are far a long in flowering, but my plants that are 6+ feet tall seem not so far, espically the tops which are at the very top of the green house.... is this because of how hot it is? do greenhouses change flowering time?

Im growing sweet tooth and it says they mature quick, and are done mid september... they are no where near done, the tops barely have flowers.

The plant should be fine as long as the plant isnt in more than 83 degrees, the plant does get alot of hormones that promote growth at night from temperature drop. Whats your ventilation like? do you suck out air from the top of the box?