Is it the 4th week into 12/12? If so you should be having buds already well at least I have well developed buds at 4 weeks into flowering.
Actually, (don't laugh too hard) but I didn't know any better, and they have actually been started from seed at about 8/16 with a 4' flourescent grow tube and 1 regular tube from my workbench light, until the beginning of July when I moved them to outdoors plants.
All in all, they are about 14-16 weeks old, I don't know for sure-like I say, I didn't know any better, and didn't keep very good notes at that time.
They are bagseed, and I'm getting right at 12/12 natural sunlight down in the south here, although the humidity is kinda high, and the3 temps usually in the 90's during the day, sometimes dropping into the mid 70's at night.
Here's a better pic of the leaves, somebody mentioned it might be a sativa strain..........
Also shows some of the rust spots I've been getting lately.