My mother had some that overwintered for years some time ago until they were dug up and replaced with some daffodils. I think if you put them in a protected spot along a wall with good drainage and some mulch, they can come back like cannas often do.

The will definitely overwinter. I have been trying to get some out of one particular garden and they are almost a nuisance since they seem to spread and really like it in this particular spot.

Alexa

They might spread?? Argh, I didn't even think of that.

A couple of years ago, I planted a few irises in one bed. I can't believe how much they've spread. They are dominating that bed. Fortunately there are a couple of people who are willing to take some perinneals off my hands, but I'll have my work cut out for me this fall. Before that it was stargazer lilies that were spreading like crazy. The irises have slowed them down!

I planted some gladiolas a couple of years ago thinking they were *not* hardy in this zone. A few of them keep trying to come back. I've got something else planted in that section, but the little buggers don't care.

Ann

They used to occasionally overwinter at my old house, planted in a toasty little microclimate right up against the foundation wall, southern-facing with full sun and no wind. But even there, only a few of them survived the winter. I don't think they'd overwinter in a more exposed location.