Oreocereus Trollii
Oreocereus Trollii is also commonly known as the ‘Old Man of the Mountain’. As the plant matures you can expect it to be a quite small but covered with long brown stems covered with white hairs. This succulent type is a beautiful one that blooms in the spring. When it blooms, you will enjoy small flowers.
Prefers full sun
Can be grown outdoor
Grows 50-60 cm (19-23″) tall
Grows up to 5-6 cm (4″) wide
Can die easily if overwatered 
Does not handle cold well
Prefers Zone 7a-11 -1.1 °C (20 F)
Flower is pink violet