During a move from Minnesota to Alabama, I had left a pot of dormant amaryllis bulbs at my sister's home in Iowa. Over time, this pot was covered by a stack of empty pots and stored in a garden shed attached to a heated garage. Not the next summer, but the summer after that, she had used the stack of empty pots and found the pot with the dried up "dirt" in it. Intending to use the pot, she emptied it. To her surprise there were bulbs in the soil. Remembering who had given her the pot, the next time I visited she suggested I reclaim the amaryllis bulbs - which had been placed in a basket on a shelf in her garden shed. Once they were watered and in the ground again, the bulbs flowered very nicely. They are still in my zone 8b garden and flowering every summer.