Old Man of the Mountain (Oreocereus trollii)

General Plant Information (Edit)
Plant Habit: Shrub
Life cycle: Perennial
Sun Requirements: Full Sun
Full Sun to Partial Shade
Water Preferences: Mesic
Dry Mesic
Minimum cold hardiness: Zone 7a -17.8 °C (0 °F) to -15 °C (5 °F)
Plant Height: 12 - 30 inches
Fruit: Dehiscent
Flowers: Showy
Flower Color: Pink
Bloom Size: 1"-2"
Flower Time: Late spring or early summer
Suitable Locations: Xeriscapic
Resistances: Drought tolerant
Propagation: Other methods: Cuttings: Stem
Containers: Suitable in 1 gallon
Suitable in 3 gallon or larger
Needs excellent drainage in pots
Miscellaneous: Tolerates poor soil
With thorns/spines/prickles/teeth
Awards and Recognitions: RHS AGM
Conservation status: Least Concern (LC)

Conservation status:
Conservation status: Least Concern

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Posted by Baja_Costero (Baja California - Zone 11b) on Jan 16, 2019 1:11 PM

Columnar cactus with white hair and red/yellow/brown spines, from higher elevations in the Andes. Stems grow to about 3-4 inches in diameter and 20 inches high. Smaller and lower than the related O. celsianus. Branches at the base to form clusters of several stems. Pink/red flowers. Fast growing from seed and relatively common in cultivation.

Very attractive ornamental plant. Develops brighter, thicker, and fuller hair in full sun. The hair acts as a sunscreen, making the plant very tolerant of extreme exposure in mild climates.

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Discussion Threads about this plant
Thread Title Last Reply Replies
Old Man of the Andes by NickyNick Jun 25, 2019 9:04 AM 18
Sempervivum Chat & photos 2018 by CDsSister Apr 10, 2019 5:14 PM 3,385
Cactus and succulents chat by Baja_Costero Jan 21, 2020 9:47 PM 6,332
I.D. for new agave and a cactus. by AgaveGirl1 Feb 11, 2017 10:53 AM 15

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