Most strains now-a-days are either sativa dominate, or indica dominate. It's just a reference to their overt expressions and growth habits. There's a few pure indica's and some pure sativa's out there, but hybrids are the norm.

Yours is quite a bit fuller than mine, WW, but I have been trying to stunt mine since day one. I topped 'em at 3rd internode, kept fairly close to light and fan...and on Monday I gave some VGI to the taller one. Will flush her this coming monday to remove residual VGI.

Had a problem with yellowing trying to keep a lower ph, but they're coloring back up after resuming low-end norms. (6.3ish ph ingoing) I'm just going to treat them like any other sativa dominate. (unless they complain too much) Still no signs of sex. <grrrr>

Anyway, the GN Thai is tied against the wall screen. VGI plant on right, untreated on left. Anything with wide leaves isn't Thai, lol. Lost a couple of lowest fans after VGI application, and greening-up is slower than the one on the left, but time will tell. Will remove the other plants sometime this week and get a better shot of the tie-back.

Interesting plants, but no doubt about it...they're slow-pokes. Would be nice to know by now if they're male or female...