Sempervivum and Jovibarba forum: Sempervivum helveticum and the mystery semp

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Name: Paul
Antelope Valley, S. California
Zone 8B/9A
Region: California
cahdg6891
Jun 30, 2016 11:39 PM CST
Hi everyone Smiling

Does anyone know if Sempervivum helveticum is a proper species or is it a hybrid? The Royal Horticultural Society lists S. helveticum as a synonym but doesn't say of what, and these websites list it as another name for Sempervivum montanum.

https://mikesgardentop5plants.wordpress.com/2012/12/11/speci...

http://www.plantenvinder.nl/plant/details/id/7882

However, the database on this website says it's a hybrid. The name helveticum "of/from Switzerland" sounds like a proper botanical name to me. Scratching my head on this one! Confused I wish Sempervivums had a comprehensive encyclopedia. Sighing!

For the mystery semp, (detective hats please! I tip my hat to you. ) when I was out today I found this on a rack of succulents from Cactus Collection. The container says 'Hens and Chicks Asstd. / Sempervivum Species', and I once contacted Cactus Collection about a semp Home Depot had from them but never heard back. I am thinking possibly Sempervivum tectorum or the like? It definitely looks like this one listed on their website

http://www.cactusshop.com/library/ImagePopup.aspx?id=1302

but I'm not quite sure because my S. tectorums are usually either very green or reddish. Any thoughts?

And I apologize for my posts, they always seem to be so long. *Blush*

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Name: Lynn
Dallas, OR (Zone 8b)
Charter ATP Member Garden Sages I helped plan and beta test the plant database. I helped beta test the Garden Planting Calendar I was one of the first 300 contributors to the plant database! Plant Database Moderator
Forum moderator I helped beta test the first seed swap Celebrating Gardening: 2015 Plant and/or Seed Trader Garden Ideas: Master Level Sempervivums
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valleylynn
Jul 1, 2016 1:37 PM CST

Moderator

Hi Paul.
Great questions. This is what I find:
The only reference I find to helveticum is that it is a synonym, some say for S. montanum. What is on the market right now as S. 'Helveticum' does not look like a montanum species type semp?
http://www.youngs-garden.com/succulents/hens-and-chicks/helv...
http://mountaincrestgardens.com/sempervivum-helveticum/
We do have an entry in the database. Hen and Chicks (Sempervivum 'Helveticum')
Nothing is really know about this semp, 'Helveticum'.

Your photo is lovely, but no way of identifying it. I would love to see what it looks like through the seasons.
Name: Greg Colucci
Seattle WA (Zone 8b)
Sempervivums Sedums Plant Lover: Loves 'em all! Cactus and Succulents Container Gardener Garden Ideas: Level 1
Garden Art Birds Dog Lover Cat Lover Region: Pacific Northwest Hummingbirder
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gg5
Jul 2, 2016 3:53 PM CST
Hi Lynn, here is what mine looks like, it hasn't ever bloomed, but when it does we'll know if it has montanum in its heredity... From the looks I would say possible, it is a small tufted semp
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Plants bring me peace and calm, more of what we all need Smiling
[Last edited by gg5 - Jul 2, 2016 3:56 PM (+)]
Give a thumbs up | Quote | Post #1200520 (3)
Name: Lynn
Dallas, OR (Zone 8b)
Charter ATP Member Garden Sages I helped plan and beta test the plant database. I helped beta test the Garden Planting Calendar I was one of the first 300 contributors to the plant database! Plant Database Moderator
Forum moderator I helped beta test the first seed swap Celebrating Gardening: 2015 Plant and/or Seed Trader Garden Ideas: Master Level Sempervivums
Image
valleylynn
Jul 2, 2016 4:17 PM CST

Moderator

Yours looks the same as MCG and Young's, also Patty's photo in our database.
Name: Paul
Antelope Valley, S. California
Zone 8B/9A
Region: California
cahdg6891
Jul 2, 2016 5:07 PM CST
Lynn, what are some things to look for to identify a montanum type sempervivum? I have 'montanum ssp. minimum' in my collection, but not 'montanum' proper yet (unless 'helveticum' is indeed 'montanum').

Nice photo, Greg! Here are some pictures I snapped earlier this year of mine. The leaf tips turn a beautiful cherry red until it gets too hot to keep them in full sun.




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Name: Greg Colucci
Seattle WA (Zone 8b)
Sempervivums Sedums Plant Lover: Loves 'em all! Cactus and Succulents Container Gardener Garden Ideas: Level 1
Garden Art Birds Dog Lover Cat Lover Region: Pacific Northwest Hummingbirder
Image
gg5
Jul 2, 2016 5:22 PM CST
Nice Paul - it does look a little like helveticum Thumbs up
Plants bring me peace and calm, more of what we all need Smiling
Name: Lynn
Dallas, OR (Zone 8b)
Charter ATP Member Garden Sages I helped plan and beta test the plant database. I helped beta test the Garden Planting Calendar I was one of the first 300 contributors to the plant database! Plant Database Moderator
Forum moderator I helped beta test the first seed swap Celebrating Gardening: 2015 Plant and/or Seed Trader Garden Ideas: Master Level Sempervivums
Image
valleylynn
Jul 2, 2016 5:53 PM CST

Moderator

Here are a bunch of S. montanum with a number of subspecies.
http://www.semperhorst.de/Naturformen%20M/Naturformen%20M.ht...

And 5 pages more. Blinking
http://sempervivum-liste.de/natur
Name: Paul
Antelope Valley, S. California
Zone 8B/9A
Region: California
cahdg6891
Jul 2, 2016 10:08 PM CST
Thank you for the links, Lynn Smiling

It never ceases to amaze me how different sempervivums can look from each other, even within the same species.
Name: Lynn
Dallas, OR (Zone 8b)
Charter ATP Member Garden Sages I helped plan and beta test the plant database. I helped beta test the Garden Planting Calendar I was one of the first 300 contributors to the plant database! Plant Database Moderator
Forum moderator I helped beta test the first seed swap Celebrating Gardening: 2015 Plant and/or Seed Trader Garden Ideas: Master Level Sempervivums
Image
valleylynn
Jul 2, 2016 10:19 PM CST

Moderator

It is fascinating isn't it. Smiling

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