no trichomes

Long story short - I cut and cultivated clones too early as I didn't know I'd be flowering my Super Lemon Haze (Greenhouse Seeds) for 13 weeks. I simply didn't have room for them and didn't have the heart to toss them so I planted them in 5 gallon buckets and set them in an unheated greenhouse...

I have a sativa dominate pineapple express that has been flowering for 14 weeks and hardly has any trichomes. What am I doing wrong?! I have heard that some strains can take up to 18 or even 22 weeks to finish, but this has me extremely worried that I've spent 14 weeks flowering crap! It stinks...