Answer: I'd do a germination test (place 20 seeds in a moist paper towel in the shade and count the number of seed germinating after one week) If it's less than 70-% germination, toss it! Corn is seed is usually good for only one season. A better storage temperature is closer to 50F. Seeds can be better stored in a refrigerator or a freezer. Make sure that the containers are as moisture-free as possible. Warm up the seeds before you use them.
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