Not hardy....foliage looks like an Amaryllis but the leaves are thinner....plant just below the soil surface in a pot, water and they will grow....very easy and they multiply like crazy.....I bought 2 of these 5-6 years ago and now I have easily 200....I give away a ton of them every year......just take the pot inside and put it in your basement for the winter and then take it back out the following spring. They like lots of water and if you fertilize they will grow very fast in terms of bulb size and offset production. Good luck :o) Dan

I suspected they were not hardy.

Oh, that's neat; you don't even need to dig them out of the pot? In that case I won't put them in the garden, just in a pot and put in a few annuals to do something before the Ismene blooms.