It comes down to how strong you want your oil and how much oil you want to eat to get high. I toss the trim in the trash as I already grow more then I can use. Shake all the Bud to Hash / Kief and use only that to make capsules from and toke the rest. I haven't smoked or made bud-based oil in over 10 years.How much of the plant should I use? The flowers clearly but the trim seems like a waste to discard.