Trees

It’s due to when you harvest the plant.

The longer you let the plant go, the more THC degrades into CBN which is what makes people relaxed. Sativas typically flower longer and take longer for the THC to degrade, so sativas typically lead to a creative high.

But it’s entirely down to harvest time, and yes there is a vast difference in the effects between THC and CBN. Cloudy trichomes = THC and Amber = CBN, let a plant go until it’s 100% amber and you won’t be moving after consuming.

So to answer OP find edibles that are fully THC and avoid CBN, or find some flower that’s not too amber and make your own. Thats kinda the only options, you don’t know what type of trichomes edibles are made from, some list the CBN quantity, but not all.