Is it possible that environmental factors such as ...

Guaranteed. Grew 5 autos, 2 didn't drain well, got locked out. Burnt all the leaves up, pretty much gave up on them. Finished strong with great potency and better yield than the faster ones,but a couple weeks late, even though they were autos and should have been on the same timeline.

Yeah it's totally possible, that having lights not strong enough or a pot too small or not enough drainage for the roots. All of these things and more will determine how fast and tall your plant will grow. Also how often and how much you water, what you feed them, training, everything really! 🌱😁👍

Oh ya man if your to cold in that grow or your nutrients are off high or low pH then yes the over all outcome will be longer growing times ... All your environmental factors will effect growth rate and quality , where the pheno- type or strain is gonna be limiting factors like max yield , flowering times , and overall taste and smell... If she is happy then we are happy the best is just to practise restraint and patience this is a great hobby to get involved with cheers friend ..

No I don’t think so. Your environment factors can only cause stress. It depends on the phenotype or the strain you have. Good luck