This old man dwells far above the sea, although you won’t encounter “him” unless you’re exploring the mountains of Argentina, Bolivia, or Peru. It is in those high-up places that old man of the Andes cacti stand like snowy sentinels, eventually reaching up to 10 feet tall.
We recommend planting a specimen with porous cactus soil that allows for adequate or better drainage. Try to avoid watering Oreocereus celsianus during overcast or humid weather, or on cold winter days. Outdoors, this mountain native is fine with full sun, but it does not care for extreme heat. If indoors, it will want to be near a sunny window.