Data specific to Sempervivum (Edit)
Hybrid: Yes
Hybridizer: MINA COLVIN
Country of Origin: (US) United States
Year of registration: 1973
Seed parent: Pod parent was arachnoideum subsp. tomentosum Hen and Chicks (Sempervivum arachnoideum subsp. tomentosum)
Size: Medium 2 1/2" to 4"
Soil type: Dry
Well draining
Loamy / Medium
Sandy / light
Other: The soil type will depend on what your weather conditions are like. Just make sure it drains well.
Foliage: Fuzzy
Other: Green leaves well shaded pink. Mature plants turn burgundy at heart. Thick cilia frosts young plants
Water: Very low
Average
Does not like wet feet
Uses: Accent
Containers
Pests and Diseases: Pest resistant
Availability: Easy to find
Toxicity: Low risk
None
Possible skin irritant to some people

General Plant Information (Edit)
Plant Habit: Cactus/Succulent
Life cycle: Perennial
Sun Requirements: Full Sun
Full Sun to Partial Shade
Minimum cold hardiness: Zone 4a -34.4 °C (-30 °F) to -31.7 °C (-25 °F)
Leaves: Unusual foliage color
Evergreen
Flowers: Showy
Flower Color: Pink
Bloom Size: Under 1"
Flower Time: Summer
Late summer or early fall
Fall
Other: It may be several years before it blooms
Suitable Locations: Xeriscapic
Uses: Provides winter interest
Groundcover
Wildlife Attractant: Bees
Butterflies
Resistances: Deer Resistant
Propagation: Seeds: Provide light
Stratify seeds: Stratifying seeds may improve germination, but is not required
Needs specific temperature
Suitable for wintersowing
Sow in situ
Will not come true from seed
Propagation: Other methods: Division
Offsets
Containers: Suitable in 1 gallon
Suitable in 3 gallon or larger
Needs excellent drainage in pots
Miscellaneous: Monocarpic
Parentage: tomentosum x ?

Image
Common names
  • Hen and Chicks
  • Houseleek
  • Live-Forever

Photo Gallery
Location: Connecticut
Date: June 16
Location: Pacific Northwest, zone 8
Date: 2020-02-25
Location: Western Washington
Date: 2018-05-31
Location: Pacific Northwest, zone 8
Date: Feb 18, 2009
Photo courtesy of Cynda Foster, Perennial Obsessions
Location: Willamette Valley, Oregon 
Date: 2014-11-02

5-5-10 Upper Midwest Zone 4
Location: Pacific Northwest, zone 8
Date: Mar 26, 2012

Photo Courtesy of Mountain Crest Gardens. Used with Permission.
  • Uploaded by Joy
Location: Denver, CO (full sun)
Date: 2011-04-27
New plant. Source: Timberline Gardens

4/17/2011 PNW, zone 8
Location: Lincoln NE zone 5
Date: 2016-04-06
Location: Lincoln NE zone 5
Date: 2015-06-18
Photo by twitcher
Location: Zone 7A NC my garden
Date: 2012-02-15

6/12/2011 PNW, zone 8

7-3-10 Upper Midwest Zone 4
Location: my garden zone 7b NC
Date: 2012-06-21
Location: Pacific Northwest zone 8
Date: Oct 2, 2011
Location: Lincoln NE zone 5
Date: 2017-05-27
Location: Tabby's Garden
Date: 2012-05-14
Purchased from Timberline Gardens in Arvada
Location: Lincoln NE zone 5
Date: 2014-05-25
Location: Pacific Northwest, zone 8
Date: 2015-04-09
Location: My garden, zone 4 Wisconsin
Date: 2012-07-09
zone 4 Wisconsin
Location: my garden zone 7b NC
Date: 2012-06-17
Location: my garden zone 7b NC
Date: 2012-06-09

6-12-10 Upper Midwest Zone 4
Location: Pacific Northwest, zone 8
Date: Jan 2, 2012

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Comments:
  • Posted by valleylynn (Oregon City, OR - Zone 8b) on Jun 16, 2014 9:13 PM concerning plant:
    Here is a quote from Kevin Vaughn about Sempervivum 'Silver Thaw':

    JungleShadows said:I can tell you the story of this one.
    Mina Colvin loved arachnoideum 'Tomentosum' and wanted to see what variations it might produce from seed. She grew a large number and sent a slide of the group of seedlings in our round robin that eventually became SFAN. I saw two that looked distinctive in the slide and said "pull these two out and grow them on". Those two turned out to be 'Raspberry Ice' and 'Silver Thaw', both great plants although frustrating as parents because they produce few seeds. Both grow great for me although my colony of 'Silver Thaw' looks a bit chimeric, as some of the rosettes are differently colored than the rest. Generally I would blame seedlings, but not in this case.

    Kevin

Discussion Threads about this plant
Thread Title Last Reply Replies
Photo by valleylynn Oct 30, 2011 8:59 PM 0

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