Since you are in North carolina, why not just sow them in pots on the patio or deck now? If it is too cold they will not sprout, and they will naturally just sprout when the time is right in your zone. I just wintersowed some lettuces and spinach in the milk jugs this past weekend because indoor space is at a premium here for plants.
I also am testing the pot method. I watered well, seeded, and covered with clear plastic with lots of holes poked in for ventilation. But it's quite a bit colder where I am.
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Antoniette
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