Howdy All, I have to laugh at this conversation. This is another one of these "One man's treasure is another's trash" stories........ I used to grow the white, pink and red forms of Hesperantha coccinea (at that point Schizostylos or something like that) until they became invasive weeds for me. The red one expanded the second year by about a foot in radius within 12 months which was when I decided they were a bad idea. Neither of the other two were as bad, but they were still multiplying a bit too healthily for my liking. It took me 3 years to eradicate the lovely little dears. Even then about 2 years after that I discovered a couple of small pieces that appeared about 2 metres away (seedlings? Don't know). They've never appeared again since then thankfully. One day I might try them again, in a similar setup as I grow Crocosmias.... i.e in a pot which is carefully protected to make sure they cannot escape out the drainage holes! LOL It really goes to show just how much difference different climates can make to how easy or hard something is to grow. I can definitely vouch for the fact that -8'C with no cover is definitely not going to affect them, or at least not the ones I used to grow anyway. Good luck to those of you who are trying to grow them unsuccessfully. They are rather pretty flowers at the right time of year, and a large clump of them can look rather impressive. They were just a little too boisterous for my liking here!! Cheers. Paul Tyerman Canberra, Australia - USDA Zone Equivalent approx. 8/9 Growing an eclectic collection of plants from all over the world including Aroids, Crocus, Cyclamen, Erythroniums, Fritillarias, Galanthus, Irises, Trilliums (to name but a few) and just about anything else that doesn't move!!