Petrocosmea rosettifolia

Petrocosmea rosettifolia

Postby illustrator » August 29th, 2011, 10:49 am

I grow P. rosettifolia for some years now, but it is puzzling to me. First I had difficulties with propagation, I noticed that the leaves rot very easily and you have to keep them rather dry, after that, it is no problem (just 1 plant per leaf seems to be the rule, not many as with violets).

But now I can grow them, and propagate them, and they look nice and healthy, but they never flower. I gave some away, which flowered a few weeks later! Clearly, they miss some kind of trigger, like a change in temperature or so. I tried putting one outside for some weeks last year, it survived (with some sunburn), but it didn't flower. (I have really cold nights, right now it gets to 10 degrees, even when the daytime temperature is 25-30 degrees).
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Re: Petrocosmea rosettifolia

Postby Lola » August 29th, 2011, 11:20 pm

My P. rosettifolia during 3 year never flowered but P. barbata, P. flaccida, P. forrestii, P. Momo, HT-2 flowered every year. Maybe need more light for her.
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Re: Petrocosmea rosettifolia

Postby Valkiria » September 13th, 2011, 2:17 pm

P. rosettifolia

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Lola's plant.
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Re: Petrocosmea rosettifolia

Postby Valkiria » September 13th, 2011, 2:20 pm

And this are my leaves, received from Paul from Slovenia (thanks again).

They now have bigger babies. But I am just happy that they are alive. :lol:

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Re: Petrocosmea rosettifolia

Postby illustrator » September 14th, 2011, 12:50 am

just keep them on the dry side, there is still a risk that they will rot and the babies have to struggle a lot if their mother-leaf dies too soon ...

Eventually the leaf will die, you don't have to separate them as there is usually only one plantlet on each leaf. So they will not be in the way of each other like violet plantlets.
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Re: Petrocosmea rosettifolia

Postby Valkiria » September 14th, 2011, 11:29 am

I will remember your advice, Paul. Now the babies a little bit bigger. ;)
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Re: Petrocosmea rosettifolia

Postby Laci » November 28th, 2011, 3:54 pm

Mine is developping flower buds!! happy02:
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Re: Petrocosmea rosettifolia

Postby Valkiria » November 29th, 2011, 3:46 pm

Wow, Laci!
How much it took, form leaves to flowers? Or from baby to flower?
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Re: Petrocosmea rosettifolia

Postby Laci » November 29th, 2011, 9:41 pm

I got it as a baby in August as I remember. So It is 3 months.
I grow it under artificial light.
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Re: Petrocosmea rosettifolia

Postby Valkiria » December 2nd, 2011, 12:55 pm

That is really quickly!
My little babies from the leaves in upper pictures are doing well. Hope they will bloom in a year...or maybe quicker.
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Re: Petrocosmea rosettifolia

Postby SvetlanaBG » December 16th, 2011, 8:52 pm

Image

Image

Image

Image
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Re: Petrocosmea rosettifolia

Postby Valkiria » December 19th, 2011, 12:45 pm

That's incredible beautiful! love:
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Re: Petrocosmea rosettifolia

Postby Gabi_Munich » October 26th, 2016, 11:57 pm

Here petrocosmea rosettifolia is growing at Munich Botanical Garden.

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