Alright this is the answer I received directly from Brick Top. Props to this man:
" I have never seen any test results from any source that would be one that could not be questioned that says that cold night temperatures can cause stretching in
marijuana plants but I do know it can and does happen in other growing things, other types of plant mainly but also in some bushes and trees.
The better greenhouse growers, as in ornamental plant growers, both hobby and professional, have long since gone to digital thermostats and higher grade temperature controls because allowing the night temperature to drop low enough and then and raising the day temperature high enough so it is beyond some certain range in degrees can and lead to plant stretch in a fair number of different kinds of plants.
Lacking unquestionable proof it does happen in
marijuana plants I cannot say for sure, yes it does, but knowing for a fact it happens in other plants I would say it is highly likely it can and does from time to time occur in
marijuana plants.
I would also believe that as varied as
marijuana genetics are, where the landraces strains originated and the differences in them between it, possibly seeing that sort of stretch is somewhat strain dependent.
If all strains did it no one would be debating the question, do colder nights cause stretch? There would be no need to ask or debate, it would be common knowledge by now if it did have that effect across the board on
marijuana plants.
So to repeat myself, something I love doing, I have to believe that yes, colder nights can cause some stretching in
marijuana plants but it is likely strain dependant/due to some particular gene that might even be a recessive one that only pops up every now and then.
It does not appear to be a common enough occurrence for such a simple and direct from point 'A' to point 'B' connect the dots cause and effect in play. There has to be something more involved. How much more would have to be involved is open for debate until someone with the skills and time and resources to thoroughly test and document it does just that and gives us a definitive answer."
. Node spacing on jillybean @ 4 weeks.
