Succulents, Desert Rose and Crown of thorns like a well draining soil that will allow water to not keep the plant wet for long periods of time. Usually a well draining mix is created by mixing 2/3 regular potting soil with 1/3 perlite. For plants that require less water 1/2 and 1/2 is acceptable. Peat moss can be added as well, but more careful watering must be observed.
HARDINESS ZONES
Follow this link to read more about hardiness zones.
https://shop.arborday.org/content.aspx?page=zone-lookup
Perennials are usually a garden or landscaping plant that will be planted in the ground. Texas is split into several zones and most perennials sold in Texas will withstand the cold or will come back from the stalks and roots year after year.
A Bugs Home Nursery 