Answer: The real poppies that your grandmother grew are Papaver somniferum. The reason you cannot find the seeds in stores is that they are opium poppies and it is illegal to sell them in the U.S. In fact, it is illegal to grow them in most cities so you are not likely to see them growing anywhere, either. But if you happen upon a few plants, you may be able to talk the owners out of some seeds.
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