> My understanding is that it comes from > fairly arid caatinga habitat, and some > photos show it growing beside cactuses. > Should I give it a lean, mostly inorganic > mix like I use for pachypodiums and > other succulents? I haven't grown this Hip but caatinga soil is pretty much pure sand with a little bit of decayed organic matter in the top inch or so. Rain falls in the summer and it is warm all year - shorts weather in the daytime. And be sure the Hip grows in the soil and not on something else like a columnar cactus or a rockpile. Leo Martin Phoenix Arizona USA