If I’m really on top of things: in envelops in glass mason jars … vacuum sealed in my refrigerator. That’s the final stage, anyway!!
Here’s how I’ve been doing it for several years; my youngest is actually the one that got us started in heirloom gardening when he was 8 years old … that was about 17 years ago, so we have been saving seeds for 17 years. We try to save fresh seeds each year, and are to the point where we mostly grow our own seeds … except when we decide to try something new.
The first stage: collecting seeds throughout the gardening season. These seeds go on my “seed saving table” in my living room, waiting patiently for me to have time to clean and package. (they wait on coffee filters on paper plates, or in paper bags or boxes, depending on what type of seed and how much of it I have)
The second stage: cleaning and packaging. Usually I just clean and package in bulk – whatever envelop size needed for the amount of seeds collected of any particular variety.
The third stage: this happens some time in the fall or early winter when I have time to relax. I grab my second-stage envelops and re-package the seeds into smaller packs for selling or giving away. I always portion out what I need FIRST, and then re-package the rest.
The fourth stage: this is the ideal final stage 😉 all of the seeds are stored in vacuum sealed mason jars until I either use them, sell them, or give them away.
Currently I am in the middle of stage 2.
(the photo is some of my starts for the last season)