Don't you love sedums? There are so many species (400!), manifesting in different shapes and colours. Some species are very cold resistant, but don't like heat, while other are tropical and don't take any frost. I am anxious to see if they will survive summer heat in Athens.. I wish I had a garden or even a roof to use them as ground cover...Anyway, this is my sweet little collection:P
sedum rubrotinctum
sedum nussbaumerianum
sedum rupestre "blue spruce"
sedum adolphi
sedum makinoi
sedum stahlii
sedum palmeri
sedum x rubrotinctum "aurora"
sedum morgarianum "burro's tail"
sedum indicum (aka sinocrassula yunnanensis)