from what i have read and what happened to my first and only plant, it will likely double or tripple in size by the end of flower with most of the stretch taking place the first 1-3 weeks of flowering. Hope this helps. I have a Cousin that lives in Humboldt and absolutely loves it there.
i started 12/12 on my plant about 3 weeks ago and before i started it was about 11 inch and now it is 17 inch's tall....if you check out my grow there are pictures on there and you can tell the difference from when i changed the light times
What strain is it Btw? if its a bag seed it will be hard to judge, mine went from around 12-14" at the onset of 12/12 and is now 39" (3 weeks) so keep in mind every strain is different
they are blue dream.i think its a blueberry and silver haze cross.they were clones.would you look at my photo gallery and let me know what you think?the pics on there are from 2 days ago.i really would appreciate if u could give me some feedback.yes I LOVE HUMBOLDT!!!!!!!!
Hey Timmy, yeah Mike is right it does differ by strain. Fortunately I have grown Blue Dream twice before and both times it just over doubled in size. Some do triple but Blue Dream didn't get more than 43" and it came out of veg at 21". Hope this helps, best of luck.