I have a LA Widow (kera) that is doing AMAZING, i live in ontario and we have had 2 frost nights so far and another tonite probably. the plant needs another 3 weeks minimum so i am hoping for the best. She is about 8 feet tall and 8 feet wide.
I have a green crack (HSO) thts is about 12 feet tall, topped once. It is perfectly healthy and also needing another 3 or 4 weeks.
and finally outside i have a sugar black rose. she is about 8 feet tall, and just as wide. She broke and fell over and broke of a HUGE branch, i went and tied her all back up using an entire stripped spruce tree lol. she is doing great, needing another 3 weeks too.
The cold hasnt seemed to affect them too much at all, no dead leaves, no yellowing yet. They have never been watered and i gave them fertilizer for the first time a few days ago. Direct in the ground in the richest black soil youve ever seen. Planted may 28th at about a foot tall from seed. Its my first outdoor and i am BLOWN AWAY at the ridiculous size of the plants.
Oh ya and about your OP, I have grown Nirvana Northern Lights a few times and its insane frosty, neutral smell when growing, easy and dense, mine even got some purple in my indoor tent. 7-8 weeks, 9 if you just wanna smoke and pass out lol, and responds quickly to light cycle change.