Strain
Even though Blue Dream is by far my personal favorite, genetics does not appear to be consistent (I'm guessing that's somewhat normal with hybrids). One is clearly sativa with long skinny leaves, and two others are more indica. The sativa stretched 100% with long nodes and a f#$k ton of thick bud with few leaves in between, the other two were more tightly packed with lots of sugar leaves between buds (stretch was about 75%). The sativa had a hard time with spider mites.
Nirvana suggests a flower time of 7-9 weeks. To me this looks more like the opening window - as to when it would first be ready. An indica was milk ripe at Flower 65, but no signs of amber domes. I'm letting the other two go longer than this.