Question: Which plants can grow in full sun in Phoenix, Arizona? – Linda
Answer: You are in the perfect place to grow any of the plants on the AdeniumRose site. All the adeniums, Echeverias, prickly pear and other succulents/cactus will do great in your area in pots or in the grown – they are all desert plants.
Are you creating a cactus/succulent garden in the grown or do you plan to put them in ceramic pots? If you plant to use pots make sure you use the right soil and pots so the roots get plenty and water them well twice a week during the summer. You are in a desert which means the plants when kept in pots will get very hot during the summer. In your area I would stick to light color glazed pots (they must be unglazed on the bottom and have good size holes) or non-glazed ceramic pots.
Do not use plastic pots for the cactus and succulents in your area. Stay away from dark colors to help keep the succulent roots cooler. Check out the bonsai pots on the Epic Grower site or your area. I would get a bit oversized ceramic pot one to give you more room for soil which will help keep the roots a bit further away from the ceramic so they stay cooler.
If you plan to pant the cactus and succulents in the ground I dig a hold about twice the size needed. Put weed control fabric in the bottom of the hold and then 3” of rock and another layer of weed control fabric on top of the rocks first. Then add the proper cactus soil and pots. The first layer of fabric will keep the rocks from sinking into the ground and the 2nd layer keeps the soil above the rocks. The rocks allow air to flow up and make sure water drains well from the cactus planting area.