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I have received these plants hardy to zone 6b, minimum temperatures of -23°C (-9.4°F). I know there are numerous species of Sempervivum that look alike, but I kind of hope somebody knows some details about them. Their diameter is 2-9 cm (0.8-3.5 inches) and were collected from a garden with the approx. coordinates 46°N, 23°E, elevation 400 m (1300 ft).

The leaves are green. In reality the leaves don't have the white shine that appears in this photo.

enter image description here

  • Alina, thanks for putting the temperatures and measurements in a way that we all understand them, even the few of us who still use the Imperial system! – Sue Saddest Farewell TGO GL Aug 17 '17 at 19:08
  • Actually I think it would have been nicer if I gave the Imperial units by default and the metrical in parentheses because the most part of the active users are from US. As far as I know, only Bamboo and Giacomo are in Europe, the rest of the potential answerers being imperial system users. I find metrical really convenient, that's why I use it by default, defying the statistics. :) – Alina Aug 17 '17 at 20:02
  • The white shine are probably the glandulose hairs. Flash beats portable lens, in some cases. If you were here (and it is a wild plant), I would say: sarkanperennataimisto.fi/kuvat/Sempervivum_wulfenii.htm – Giacomo Catenazzi Aug 19 '17 at 19:11
  • Thanks! It looks a lot like the plant in your link, the only difference being the white hairs at the edge of the leaves. – Alina Aug 19 '17 at 19:30
  • There are also so many hundreds of varieties and hybrids, and each looks different in different growth conditions. The closest answer will just be a guess based on pictures. – J. Musser Aug 31 '17 at 18:48

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