Marsh wouldn't the seed need to breath? If eating them it wouldn't matter but I thought viable seed needed at least a little air.
That’s a very good question and way above my pay grade. All I can tell you is I’ve sealed seed before and put them in the freezer from one spring to the next and they germinated fine when I planted them. Guess it’s time to do a little research.
Google says that vacuum sealing seed in a plastic bag is the ultimate way to preserve seed. Seeds store this way have shown to be viable for up to 10yrs. It says to just keep them in a cool dry place. That’s our learning session for today.