String of pearls is a delicate hanging succulent that thrives in a warm and dry environment. They are very easy to care for as an indoor houseplant but are also an ideal succulent to grow outdoors, especially if you live in zones 9 and warmer. But in other zones, where the temperature tends to drop lower than 30 degrees Fahrenheit, it's better to grow the String of Pearls in a container, so they can easily be carried indoors for protection.
When grown outdoors, String of Pearls should be placed in a partially shaded spot, where it can be protected from the hot sun in the afternoon, and at the same time, enjoy some bright, indirect morning sunlight.
Source: Succulents Box