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Sempervivum 'Excaliber'



I like all sempervivums or I wouldn't have grown so many however this one, although vigorous, was a bit of a disappointment. Raised by Ed Skrocki in the USA and introduced in 1972, I thought that it was a great name wasted on a rather ordimary plant. Under glass it had greyish, misty-green leaves that had lady-of-the-lake undertones but when it went outside it turned into a fat, brown cushion suitable for an uncomfortable knight on a bony horse.
I have two forms of the plant, one with grey leaves the other with brown tips.

Horst Diehm has the earliest description I can find and he said:

"Rosettes pinkish red in spring, later more green, dark tips". Volkmar Schara is quoted on Sempervivum List saying:

"Medium-sized, light green rosettes that form loose cushions. Makes longer runners! A cross with Sempervivum ossetiense."

Surreal Succulents say:

"This small, hardy succulent features striking orange tinges, adding a touch of colour to any space. Its resilience makes it the perfect addition to any garden or indoor collection."

I guess Sempervivum are like children, you try to say something nice even when they are rather dull.


7th November 2008



21st March 2009 21st March 2009 11th September 2009



References:
  • Smith, Alan C. - Sempervivum and Jovibarbas , revised ed. 1980
  • Furness, Steve - Sempervivum, a gardeners guide, Alpine Garden Society, 2023
  • Wills, Howard and Sally - Sempervivum and Jovibarba, 2004
  • International Sempervivum Forum, https://sempervivum.aforumfree.com/.
  • Diehm, Horst - sempervivumpage.de, 2001, autotranslated, no longer available online.
  • Sempervivum List online,https://www.sempervivum-liste.de/de/sempervivum/excalibur, accessed 13.05.2025.
  • AGS Encyclopedia online, http://encyclopaedia.alpinegardensociety.net/plants/Sempervivum/CULTIVARS , accessed 13.05.2025.
  • Martin Miklanek, List of Sempervivum and Jovibarba cultivars, https://miklanek.tripod.com/MCS/cvA-E.html , accessed 12.06.2025.
  • Sempervivum Garden, https://sempervivumgarten.de , accessed 12.06.2025.
  • Surreal Succulents, https://surrealsucculents.co.uk/products/sempervivum-excalibur?srsltid=AfmBOoqL_405mx-0bbV0XqT2RksOoDoEhTzP_gsOxAvt6Kc5Rxoxtm6p , accessed 13.05.2025.