Soft succulents, as knowns as Tender succulents, are featured by the wide range of shapes and colors. They are less tolerant of low temperature compared with hardy succulents. Some of the most common soft succulents are Echeverias, Crassulas(Jade Plants), Aeoniums, Tender Sedum, and Senecios. Most of them can't survive outdoor in frost area. In USDA Zone 10+ areas(frost free area), nearly all soft succulents can be grow outside. So it's important to figure out which zone you are in before picking up varieties especially in winter.