Hi Judy, I have never grown these, but do have an interesting reference. "Bulbs for Summer Bloom" by John Philip Baumgardt, has them hardy to zone 5 (Kansas City, MO). He is writing from experience, so presumably it worked for him. Perhaps he and Jim Waddick have hot springs under their homes? Lisa Judy Glattstein wrote: > When I was in Holland in August of 2002 there was a field of tigridia at the > end of the road that Hotel de Nachtegaal was on. Flowering beautifully. They > were all chopped down and harvested not even a week after I arrived. There > was a nice display of them at the Floriade also. > > Has anyone grown them? Not that I'm planning on growing them here in New > Jersey. But I'm writing them up for my book, and just realized that none of > the California, Texas, New Mexico "bulbs I am growing/ have grown" messages > make any mention of this extravagant, showy, Mexican flower. And I would > have thought it would be suitable. > -- Lisa Flaum Waterloo, IL central USA clay soil, Hot humid summers (to 105F, 40C) generally dry, punctuated by gully washers Cold, wet, cloudy winters, little snow cover, intense freeze/thaw cycle (-10F, -25C)