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Sempervivum 'Rubin'



One of the brightest red cultivars to make it to the commercial mainstream. The colour never fails but I found that it tended to rot off outside and only grew strongly in the greenhouse. I got it in a garden centre but iut has been around for a long time. In 1981 Bressingham Gardens wrote in their catalogue:

"Large, fleshy rosettes of a reddish bronze hue, flowers pink."

Raised by Goos and Koeneman in Germany in 1937 from a cross between S. tectorum and S. marmoreum.

Horst Diehm said:

"ruby - garnet red, medium-sized rosettes, leaves salmon red, flowers salmon red, height 15 cm, needs some nutritious soil"

Erwin Geiger is quoted on Sempervivum List:

"This gemstone has been in cultivation for decades and is one of the first Sempervivum hybrids. The variety was bred by the Goos & Koenemann nursery, which introduced many peonies, irises and clematis hybrids at the beginning of the century. A classic with ruby red rosettes all year round! Unfortunately, many false plants are now common under this name."

Sempervivums by Post say:

"'Rubin' is the classic red sempervivum or houseleek and rightly so. It's tough and makes a lovely clump. Looks especially vibrant in spring, but good all year. Originated from Germany in 1937 and has stood the test of time. Should be in every collection."


25th June 2005



25th June 2006 21st March 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, accessed 20.07.2025.
  • AGS Encyclopedia online, http://encyclopaedia.alpinegardensociety.net/plants/Sempervivum/CULTIVARS , accessed 20.07.2025.
  • Martin Miklanek, List of Sempervivum and Jovibarba cultivars, https://miklanek.tripod.com/MCS/cvA-E.html , accessed 20.07.2025.
  • Sempervivum Garden, https://sempervivumgarten.de , accessed 20.07.2025.
  • Sempervivums by Post, https://sempervivumsbypost.co.uk/products/sempervivum-rubin , 20.07.2025.