Just a couple of my Sempervivum today.

in Plants
I collect Sempervivum and here are 2 that at the moment look really good.
Sempervivum 'Krater',a new one to my collection last year,the main rosette is over 7 inches across.

This one is Sempervivum 'Charlotte',beautiful flower which the bees love.

Sempervivum 'Krater',a new one to my collection last year,the main rosette is over 7 inches across.

This one is Sempervivum 'Charlotte',beautiful flower which the bees love.

“Every day is ordinary, until it isn't.” - Bernard Cornwell-Death of Kings
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They're really very tough plants, if given the right conditions. I have some that I've had for years.
I live in west central Scotland - not where that photo is...
Lovely plants of which I also have several!
Indoor plants (or outside for the summer).
Try spraying the blackfly with a mixture of washing up liquid and water.Try not to get too much on the leaves as they may mark.You could also use an insecticide.
They don't like the wet so make sure the compost is very well drained or keep the plants under cover.Cold they can take but not wet.They can also be susceptible to the dreaded Vine Weevil so keep an eye out for them.They are pretty undemanding plants really.
I always used to think they were boring plants until I saw the great variety you can now get.I have around 50 named varieties.I love them because they keep changing colour through the year.