Cactus | Plants

Old Man of the Andes, scientifically known as Oreocereus celsianus, is a unique and visually intriguing columnar cactus that stands out for its long, white, woolly hairs. This hair-like covering provides protection from the harsh sun and cold temperatures in its native high-altitude environments, but it also gives the cactus its iconic “old man” appearance. Growing up to 10 feet tall, this cactus is perfect for Arizona landscapes, adding an exotic and textural element to rock gardens or xeriscaping. In the summer, Old Man of the Andes may produce deep red or magenta flowers, adding a pop of color to its otherwise silvery-white profile.

Type of Light: Full Sun
Old Man of the Andes thrives in full sun but can benefit from some afternoon shade during Arizona’s hottest months. Make sure to plant it in a spot where it can receive plenty of morning sunlight to promote healthy growth and blooming.

Watering: Low Water Requirement
As a drought-tolerant cactus, Old Man of the Andes requires minimal water. Water every 2-3 weeks during the summer, allowing the soil to dry completely between watering. In the cooler months, reduce watering to once every 4-6 weeks. Be sure to use well-draining soil to prevent waterlogging.

Companion Planting:
Pair Old Man of the Andes with other desert-friendly plants such as Agave Parryi, Golden Barrel Cactus, and Mexican Fencepost for a striking desert-themed garden. To soften the look and add contrasting colors, plant it alongside Lavender or Red Yucca, which also attract pollinators like bees and hummingbirds. These combinations create a visually interesting, low-maintenance garden that thrives in Arizona’s dry conditions.