Here in Holland, Europe we had -25 Celsius for some days and the Ipheon uniflorum in my garden are in full bloom at the moment. The leaves are not damaged at all. They seem to be in a very good condition. Hans Huizing Op 17-4-2012 5:33, Jacek Zwoliński schreef: > This was my idea, as well. > > I. uniflorum leaves survived the previous winter without sigificant damage (minimum -20 C, almost no snow). Yet, this winter was far worse. I have never seen "winter" crocuses death-frozen, yet. > > In cold climate not only minimum temeperature is important. Length of frost and snow cover have similar importance. Even 1-2 cm of snow may prevent leaves from dying (if they lie on the ground - this is the case of Ipheion in winter). > > I wonder what are the minimum conditions Ipheion is able to survive. Gardeners from cold continental locations without guaranteed snow cover might help. Janis Ruksans (Latvia, colder than Poland) might help. > > Alberto, what do you mean by "winter hardy bulbs from Argentina"? Could you give me some source I could read? Unfortunately, I use English only. I have Oxalis adenophylla (cold hardy, but prone to rot) and Oxalis magellanica Flora Pleno/Nelson (probably death-frozen this winter). > > Jacek, Poland, winter zone 6A > > Dnia 17-04-2012 o godz. 1:08 Alberto Castillo napisał(a): >> Well, this plant didn't obtain this feature growing in the very mild >> climate of Uruguay. This and several other bulbs from Argentina seem to >> have a more southern (cold) origin and prove amazingly hardy. Only "now" >> they grow in more northern locations where that hardiness is "useless". >> My previous information on hardiness of Ipheion uniflorum was -24 C >> without losing foliage (this sprouts during autumn). >> >> >> >> _______________________________________________ >> pbs mailing list >> pbs@lists.ibiblio.org >> http://pacificbulbsociety.org/list.php >> http://pacificbulbsociety.org/pbswiki/ > > > _______________________________________________ > pbs mailing list > pbs@lists.ibiblio.org > http://pacificbulbsociety.org/list.php > http://pacificbulbsociety.org/pbswiki/ > *H. J. Huizing* Wapendrager 38 7943 RP Meppel Holland // Tel: (0031) 0522-440717 hanshuizing@home.nl http://www.dehuizings.nl/ Get a signature like this. <http://r1.wisestamp.com/r/landing/…> Click here. <http://r1.wisestamp.com/r/landing/…>