Definitely wait till spring. Some varieties can take over 90 days from sprouting to be harvestable. If you don't have that kind of time before the frost/freeze comes, don't plant it. A better/faster growing choice is Broccoli Raab. Most varieties can be harvested in as little as 40 days, and you can continue to harvest, right up until things freeze.
I think our frost is usually December or maybe November so we maaaaaybeee could have time but you're right, i dont wanna risk it, so I'll wait till spring then. And I'll look into that other kind.
To the original question about how long seeds can last. If you can put them in the refrigerator inside a ziplok or other airtight bag, with a dessicant package inside to absorb any little moisture that might have been absorbed by the packages, the seeds will last the longest. However, I've had seeds that were stored completely incorrectly and still sprouted and grew veggies 5-6 years after expiration date. There are a few seeds that are really only good the same year as the package is marked, and parsnips and moonflowers (a flower) are two of those. Other than a few things, though, seeds do last a long time.
Thank you for the help! I'll try that
So I've seen a couple people now say the zip lock bag thing but some have said fridge and some have said freezer so I'm confused lol.. which is best?