it'll be a little bit before they get crystals. I'm growing some bagseed myself, so here's a couple of pics.

pic #1 some where around 2 weeks of 12/12
[attachment=o220168]

pics #2 & #3 are around 3 weeks. almost over night they frosted over.
[attachment=o220172]

[attachment=o220167]

pics #4 & #5 are around 5 weeks
[attachment=o220170]

[attachment=o220171]

I also have a plant that appears to be a sativa dominant. It looked about the same as my indicas till about week three, but it still has no sign of crystals to speak of. I'm thinking it's going to be atleast a 10wk strain.