Photo by Melody

PlantFiles: Cobweb Houseleek, Spider Web Hens and Chicks
Sempervivum arachnoideum

Family: Crassulaceae (krass-yoo-LAY-see-ee) (Info)
Genus: Sempervivum (sem-per-VEE-vum) (Info)
Species: arachnoideum (a-rak-NOY-dee-um) (Info)

Synonym:Sempervivum sanguineum

One vendor has this plant for sale.

25 members have or want this plant for trade.

View this plant in a garden

Cactus and Succulents

under 6 in. (15 cm)

12-15 in. (30-38 cm)

USDA Zone 5a: to -28.8 C (-20 F)
USDA Zone 5b: to -26.1 C (-15 F)
USDA Zone 6a: to -23.3 C (-10 F)
USDA Zone 6b: to -20.5 C (-5 F)
USDA Zone 7a: to -17.7 C (0 F)
USDA Zone 7b: to -14.9 C (5 F)
USDA Zone 8a: to -12.2 C (10 F)
USDA Zone 8b: to -9.4 C (15 F)

Sun Exposure:
Full Sun


Bloom Color:

Bloom Time:
Late Spring/Early Summer

Grown for foliage

Other details:
Drought-tolerant; suitable for xeriscaping
Suitable for growing in containers

Soil pH requirements:
Unknown - Tell us

Patent Information:

Propagation Methods:
By dividing rhizomes, tubers, corms or bulbs (including offsets)

Seed Collecting:
Unknown - Tell us

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By jody
Thumbnail #1 of Sempervivum arachnoideum by jody

By PanamonCreel
Thumbnail #2 of Sempervivum arachnoideum by PanamonCreel

By Happenstance
Thumbnail #3 of Sempervivum arachnoideum by Happenstance

By Happenstance
Thumbnail #4 of Sempervivum arachnoideum by Happenstance

By Happenstance
Thumbnail #5 of Sempervivum arachnoideum by Happenstance

By Weezingreens
Thumbnail #6 of Sempervivum arachnoideum by Weezingreens

By jhyshark
Thumbnail #7 of Sempervivum arachnoideum by jhyshark

There are a total of 42 photos.
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8 positives
2 neutrals
No negatives

Gardeners' Notes:

Positive JeffSers On Mar 24, 2014, JeffSers from Lakeside, CA wrote:

Very tough little plant. Great grower. A great addition to your collection.

I first got this plant in a 1 inch pot with three rosettes to it. I removed the smaller two from the "mother" and had no problem rooting on in a bowl with other succulents and the other in the ground. The problem came for the one in the ground when a gopher decided to have it for lunch, so be careful about that. After a few days of heavy rain, the "mother" threw about 12 "babies" in the 3 inch pot I bumped it into.

Positive Alexwtf_93 On Dec 6, 2010, Alexwtf_93 from Susanville, CA wrote:

very easy plant to grow in sun or shade, it can be very small sometimes and grow between rocks and is small enough for almost any container garden

Positive terrora On Sep 6, 2010, terrora wrote:

Greetings...I have these and their flowers are unique and lovely...but our lot gets too hot for these beauties to stay in full sun. I keep them in partial shade...or in morning sun and they do fine (-_^)

Positive lehua_mc On Jun 30, 2009, lehua_mc from Portland, OR (Zone 8b) wrote:

I have Sempervivum Hens and Chicks 'Frosty'. They are small, green, tight clusters, like little pin cushions, and covered with fine cobwebs, forming a dense 'pool' of white fuzz in their center. When it starts to open up to flower, you can see its burgundy tips. I got the beautiful pink flowers after one winter in the ground, in late June.

Positive empressjoan On Jul 4, 2006, empressjoan from Ashland, OR wrote:

After several years in a small pot, my plant burst into bloom and looks quite like a tiny Gaudi cathedral!

Neutral jhyshark On Jun 28, 2004, jhyshark from Scottville, MI (Zone 4b) wrote:

Just did some more research and my picture of the one with reddish leaves may be cultivar "Cebenese"

Positive wnstarr On Nov 14, 2003, wnstarr from Puyallup, WA (Zone 5a) wrote:

Edgewood, Washington
The "cobweb" hen & chick if blooming in red is sempervivum arachnoideum rubrum. I have charished this interesting little fellow for years. Has survived, rain, hail, snow, sleet. Deep freezes and never fails to delight me with its durability. Love the cobweb affect, arachnoideum refers to arachnoids, or spiders. Rubrum is red, for the bloom. Good luck, and happy gardening.

Neutral Terry On Sep 3, 2003, Terry from Murfreesboro, TN (Zone 7a) wrote:

Some commercial sources sell this plant as Sempervivum arachnoidem cv. 'Cobweb' although there is little supporting evidence for it being a cultivar.

Positive pleb On Aug 31, 2003, pleb from Plymouth,
United Kingdom (Zone 9a) wrote:

Always an interesting plant and easy to grow but resents winter wet. The 'cobweb' catches and holds the rain so that rot is likely to set in.

Positive Happenstance On Aug 31, 2003, Happenstance from Northern California, CA wrote:

This variety has rosettes of all basically the same size, as opposed to the "moms & babies" generally seen. After bloom the rosette dies and other smaller ones increase in size to fill up the space.

See the images I've uploaded for the bloom, decline and death of rosettes.


This plant has been said to grow in the following regions:

Tuscaloosa, Alabama
Seward, Alaska
Carmichael, California
Clayton, California
Fremont, California
Lakeside, California
Norwalk, California
Perris, California
San Diego, California
San Leandro, California
Susanville, California
Vacaville, California
Vista, California
Colorado Springs, Colorado
Cleveland, Georgia
Hampton, Illinois
Parsons, Kansas
Baton Rouge, Louisiana
Dracut, Massachusetts
Scottville, Michigan
Neptune, New Jersey
Roswell, New Mexico
Elizabeth City, North Carolina
Mooresville, North Carolina
Cleveland, Ohio
Farmdale, Ohio
Glouster, Ohio
Ashland, Oregon
Gold Hill, Oregon
Klamath Falls, Oregon
Portland, Oregon
Millersburg, Pennsylvania
Watsontown, Pennsylvania
El Paso, Texas
San Antonio, Texas
Puyallup, Washington
White Center, Washington
Neenah, Wisconsin

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