I agree with @Calix , i think it’s the other way round - CBG are/is found in the premature trics - early precursor to the Trichs’ developing more Cannabanoids - from what I understand - and CBN is the THC when degrading , so when the trichs turns Amber the CBN is activated etc .?!!
Anyone who knows more can either correct me or confirm what im saying.
No point in conflicting info … .
I have one of the Orange Grove vegging just now - i think they’re from you originally, but I got them from @Oldtimerunderground .!
Probably up-pot it & Flower it soon ;
Orange Grove ;
I will probably take a couple of cuttings before I toss it in my flower tent …?!
Gaz.