Indica Sativa maturation effects?

[stinkyattic]

Two types of cannabis, Indica and Sativa. Thc being the main desired chemical, .... The high is controlled by the ratio of thc vs other cannabinoids.

True.

So what is Sativa vs. Indica, other than a style of plant structure? You could let a sativa mature and have all the trics amber, therefore producing a more body-centered stone, right?

With ripening, and with exposure to heat and light energy, you re going to get degradation and the THC will degrade so that the head-high lessens and the body-high increases.
As for sat vs ind, it's not just structure, it's also the ability to produce different ratios of the cannabinoids.

And you could harvest an indica earlier when the trics are cloudy for a more head-centered high right?

Well yes but (and someone correct me if I'm wrong) the overall levels of cannabinoids will be lower than if you had allowed it to fully ripen because the plant would have continued to produce resin until the day of harvest, had you harvested at the correct time for that strain.

So even if the trics are whatever, the green material itself is still going to be indica/sativa high oriented?

The green material is chlorophyll, which doesn't get you high at all, or we'd all be smoking spinach.

Cannabinoids - Wikipedia, the free encyclopedia a little info on the chemistry...