I keep mine in a spare refrigerator. In the very early spring, a few
weeks before seeding time, put a small sample on a moist paper towel,
fold up the paper towel and put it in a sealed plastic bag, like a
sandwich bag, then check it two or three weeks later to get an idea of
how many of the seeds germinated. If it is a good number, use the seed;
if few germinated, get new seed.

OK wrote:

Is it possible to save an opened bag of grass seed for next spring? If so,
how would you store it over the winter?

Thanks



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