A lot of people grind up enough for several days at a time or more, and if they continue to do it they clearly don’t mind (or maybe don’t notice) any negative effects it has on the flower.
It will still work in general, but anything more volatile like terpines will be lost more quickly the longer the flower is exposed to air, and sitting around already ground exposes it all to more air.
Even in an airtight container, unless it’s a vacuum inside, there will be plenty of air to leech out terpines, etc.
I’m not a grower or other storage expert, but here’s what I think is the best way to store flower:
1. If you have more than you’d use in a few weeks, put extra flower in an air-tight jar, CVault or other suitable storage container. If you want to maintain a decent humidity level in it, you can add a 62% Boveda pack to it.
Open this one when you need to, but try to leave it closed for weeks rather than days at a time.
2. Have a smaller container (could be the same kind you store most of your flower in, but probably smaller) dedicated to storing what you need for a few weeks.
Open this one when you need to grind more.
3. Use an even smaller container (maybe something pocketable if you need it?) for ground material, but try to grind daily or at least every few days to keep from losing too much of what’s in it before you get to use it.
Open this whenever you need it.
For this last small container you can also use an on-demand grinder like the Chewy 2* which you can store a bit in and grind it as needed over a few days, but they’re not as airtight as a good storage container so people might smell it more if you go that route.
* You can store it ground or unground in any grinder you want to store it in, but again pre-ground material degrades faster, and with most grinders when you actually go to grind it you grind everything that’s in it at once, not just what you want for the moment.
If the Chewy 2 interests you though (and this was not meant as an ad for them), you should know it gives a kinda’ medium grind - definitely not fine, so depending on what you and your vaporizer(s) prefer, it may or may not work for you.
