Sempervivum

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cohan
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Joined: 2011-02-03

RickR wrote:

Your certainly have a nice form of Jobibarba allionii, Cohan.  This December pic shows the most color mine ever gets:

Thanks, Rick, its a fave for sure-staying tightly closed most of the year, such great form!  It's actually a clone with location data; at first I just thought it maintained its tight form and colour due to my chilly weather (which likely still is a factor, as it is with all the semps) but then I realised that in one of my no-name pots there seems to be another allioni, which is paler and looser..

west central alberta, canada; just under 1000m; record temps:min -45C/-49F;max 34C/93F; http://picasaweb.google.ca/cactuscactus  http://urbanehillbillycanada.blogspot.com/

Lori S.
Title: Moderator
Joined: 2009-10-27

This little thing is sort of a Sempervivum/Jovibarba ally, I suppose... Rosularia muratdaghensis.  (To give a sense of scale, the hairy thread-like things are seeds of Pulsatilla vulgaris and the plants next to it are Sedum acre.)  It is supposed to have hairy rosettes (which I suppose it does), and flowers on which the petals are partially fused into a tube (haven't seen it bloom yet).
 

Cohan, you were growing another Rosularia sp., I seem to recall.  Did it winter over?

Lori
Calgary, Alberta, Canada - Zone 3
-30 C to +30 C (rarely!); elevation ~1130m; annual precipitation ~40 cm

cohan
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Joined: 2011-02-03

That looks like a really nice one, Lori! I've seen this on seed lists, don't think I have the seed (I have a couple unsown..)

Yes, I have Rosularia (Prometheum) aizoon,  a small clump planted in a pot which has been sunk for winters, in 2009, and its doing great! Slowly expanding its clump of tiny rosettes, no flowers yet.. I may not have photographed it this year yet, if so can't find the shot right now.. I'll take one in the next few days..
Ironically, the piece I kept indoors for insurance has survived but barely, I'll put it outside as well...lol

Meanwhile, for Rick, here is that same Jovibarba allioni (that is, same form, not the same plant, necessarily, I have it in a few spots, all young clusters like this.. not quite as fast as the J globifera hirta I got at the same time) with better spring colour/form, from May 11; this file has the location data in the name..

west central alberta, canada; just under 1000m; record temps:min -45C/-49F;max 34C/93F; http://picasaweb.google.ca/cactuscactus  http://urbanehillbillycanada.blogspot.com/

RickR
Title: Moderator
Joined: 2009-09-21

Exquisite, Cohan!  If you ever get seed...
My allionii have never produced a flower yet, in the seven years I have grown them.

Lori, you grow Sedum acre... in the garden?  That, and S. sexangulare are unwelcome weeds here!  I do grow a variegated form of S. acre, but only in a trough where I can keep a close watch on it. 

Sempervivum flowers can be so similar, but they are so cute!

                    Sempervivum 'Bronco'

             

Rick Rodich    zone 4a.    Annual precipitation ~24 inches
near Minneapolis, Minnesota, USA

Lori S.
Title: Moderator
Joined: 2009-10-27

RickR wrote:

Lori, you grow Sedum acre... in the garden?  That, and S. sexangulare are unwelcome weeds here!  I do grow a variegated form of S. acre, but only in a trough where I can keep a close watch on it. 

Errr, yes, I guess so... I have assumed that it's Sedum acre but I haven't really paid any attention to it.  Does it look like S. acre to you?  It does get similar yellow flowers, sparingly.  It doesn't have the sexangularity ( ;D) of S. sexangulare.  If it is S. acre, I guess the lousy soil and dry conditions are enough to keep it in check, as it has not spread rampantly in the >10 years it's been there.  ???

Lori
Calgary, Alberta, Canada - Zone 3
-30 C to +30 C (rarely!); elevation ~1130m; annual precipitation ~40 cm

cohan
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Title: Guest
Joined: 2011-02-03

RickR wrote:

Exquisite, Cohan!  If you ever get seed...
My allionii have never produced a flower yet, in the seven years I have grown them.

Lori, you grow Sedum acre... in the garden?  That, and S. sexangulare are unwelcome weeds here!  I do grow a variegated form of S. acre, but only in a trough where I can keep a close watch on it. 

Sempervivum flowers can be so similar, but they are so cute!

                    Sempervivum 'Bronco'

               [attachthumb=1]

I have some bits of what I presume to be S acre that came in a mixed pot of small sedums, still in some small pots sunk for winter, and in my big mixed pot... no spreading so far (only a couple of years).. no flowering either... we'll see what happens in the ground... winters may be enough to keep it under control...

The Jovis are still small, and that allioni does not seem very fast, so time will tell about flowers... lots of the semps from the same plantings (2009) are flowering this year, and I agree they are cute, I like the pinks best, but have a full covering of yellow on ciliosum--you can't see the plants without peeking under!

west central alberta, canada; just under 1000m; record temps:min -45C/-49F;max 34C/93F; http://picasaweb.google.ca/cactuscactus  http://urbanehillbillycanada.blogspot.com/

RickR
Title: Moderator
Joined: 2009-09-21

I am no sedum expert, but Lori, yours does look like it.  Although, I wouldn't be surprised if there are easily mistakable imposters.  Sedum acre flowers prolifically here.  Maybe it is just your climate...

Rick Rodich    zone 4a.    Annual precipitation ~24 inches
near Minneapolis, Minnesota, USA

cohan
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Title: Guest
Joined: 2011-02-03

here is the Rosularia (Prometheum) Lori was asking about.. I've grown it outdoors here--in a pot, sunk for winter, as beds have not been ready-- since summer 2009.. so it has dealt with two winters so far; 2009 had late warm weather, followed by an abrupt plunge to -20C (pots were not yet sunk), then wet, then as usual a cold snow-covered mid-wnter; lows to around -40C once or twice...
Last year, lasting snow cover came early -mid-nov-and very heavy and stayed late-parts of this garden were out of snow by mid-April, off and on;
The Rosularia has been unphased by these winters, and looks completely healthy when the snow goes..
First shot from May 01, second from yesterday; Prometheum aizoon

 

west central alberta, canada; just under 1000m; record temps:min -45C/-49F;max 34C/93F; http://picasaweb.google.ca/cactuscactus  http://urbanehillbillycanada.blogspot.com/

Lori S.
Title: Moderator
Joined: 2009-10-27

That plant is looking very good, Cohan.

More sempervivum flowers...
'Ruby Heart':

And Jovibarba hirta:
 

Lori
Calgary, Alberta, Canada - Zone 3
-30 C to +30 C (rarely!); elevation ~1130m; annual precipitation ~40 cm

RickR
Title: Moderator
Joined: 2009-09-21

Some additions from me, too...

                    Jovibarba heuffelii and Sempervivum 'Bronco'
             

                    Sempervivum arachnoideum 'Minus'
             

April 29th shot of Sempervivum 'Robin' and S. arachnoideum 'Minus'
             

Rick Rodich    zone 4a.    Annual precipitation ~24 inches
near Minneapolis, Minnesota, USA

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