[quote=@Ozerath]
[@Flagg] Am I understanding right that Petrichor can be used to awaken/activate psionic potential? Because then the Concordat would like a whole bunch of that.
[/quote]

awaken, activate and amplify psionic abilities, yep. Would love help fleshing out the lore on it- likely it's highly addictive, can lead to insanity or visions of the void, etc. It's also relatively rare, coming only from one planet.