United Kingdom 
20 headed , AeonIum puchased in July was almost black within a week it shed its black petals they are now green .How moist do I keep it ,what is the lowest temp it will survive in,I have it in a sheltered porch at the moment temp 60 "c I have it covered at night as the nights are getting colder.
On plant
Aeonium arboreum rubrum
27 Aug, 2010
Answers
I keep mine out doors through the summer then bring them in just as the weather turns wintery and keep them in the unheated conservatory. I have had the same plant for 6 years now.
27 Aug, 2010
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the blackness of the leaves is directly related to the amount of sunlight the plant receives - dim lighting, no sun, green leaves. Best stood outside during summer, then moved somewhere frost free for the winter, i.e., indoors. But still in sun if possible.
27 Aug, 2010