storage question

[DrDubzz]

ok, I know sealed tins are good to go, so this is my question

bulk stuff that's in baggies, how long will it be ok in the ziplock? if it's a couple oz I plan to smoke within a month or three, will it be fine for that?

if I find something I like and buy a lot(to store for a while), is a bag ok? or do I need to mason jar it?

open tins, can I just put them in a ziplock and count them to be ok for a few months?

thanks in advance guys

-Tim