My last experience [with the help of a mini wash] I had included some forgotten trims.
They were in a cardboard box, gently settled within a newspaper page... I was quite astonished by the look. Assuming trims were there for many months [if not a whole year].
stored like this upon my fridge, in a cool place with no direct light to it [sure this was helping a lot]
When I store dry trims in glass container like I would do with flowers, I often smell much more green when I open the container from time to time.
I'm still learning