You need to find a guide that will tell you which plants are cold weather plants. Farmers almanac comes to mind. At least it will tell you what to plant when and I think in which zones.
By seeds you mean plants.
Also I guess we answer gardening questions here but https://www.thesurvivalpodcast.com forum has a great gardening section. Also https://www.americanpreppersnetwork.net has a good gardening section.
https://www.allthingsplants.com has forums.
If you have a green house or hoop house you can plant and grow for the next warmest zone to you. Say you are in zone 7, then you can grow as if in zone 8. This means that if you are in Arkansas you can grow in the green house (unheated) as if in southern Louisiana.
Hot boxes help to start plants early. These are glass covered boxes for starting plants. You can get plants started and past the frost dates then transplant them.
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