I have fair number of crassulas from the drier parts of southern africa. I keep almost all of them in hanging pots which gives them plenty of sunshine and keeps them dry. I water them frequently but the pots dry out almost right away.
Don't worry if they seem to wither after flowering, keep giving some moisture, they will re-establish after summer.
Be my guest and have a look:


C. alstonii
C. columnella
C. perforata
C. muscosa
C. obvalata
C. haemisphaerica
More crassulas:
C. arta
C. columnella, larger form
C. elegans
C. namibensis
C. sericea

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