Dear Members Here in western Oregon, I've seen Tigridia hybrids survive/multiply for several years. In my own garden, there is a clump of a yellow hybrid planted in the ground that has been there about four years, and a couple "red" hybrids in a raised cement block bed, about the same. We had lows of +14F twice last winter, with no apparent damage--but of course, the corms were dormant. Both clumps get lots of rain in winter, and summer irrigation. The clump of yellows aren't even in a particularly well drained spot. Plants are about a foot tall, with flowers slightly above the leaves. The clumps do increase, but not rapidly. Individual flowers do not last long (fugacious) but there are several on a stem, and there will be flowers for ten days or possibly two weeks, and not all corms flower at the same time. Seed, sown in small pots, hasn't done well--possibly the pot should have been brought in, or covered in winter. Spring sown, seedlings seem slow to appear. Although seed has probably dropped to the ground, I don't recall seeing seedlings. I regard these as borderline plants, and wouldn't be shocked if they didn't come back. Ken