Photo by Melody

PlantFiles: Old Man of the Andes
Oreocereus celsianus

Family: Cactaceae (kak-TAY-see-ee) (Info)
Genus: Oreocereus (or-ee-oh-KER-ee-us) (Info)
Species: celsianus (sels-ee-AY-nus) (Info)

Synonym:Borzicactus celsianus
Synonym:Cereus celsianus
Synonym:Pilocereus celsianus
Synonym:Oreocereus maximus
Synonym:Oreocereus neocelsianus

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3 members have or want this plant for trade.

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Cactus and Succulents

Unknown - Tell us

12-15 in. (30-38 cm)
15-18 in. (38-45 cm)
18-24 in. (45-60 cm)

USDA Zone 8a: to -12.2 C (10 F)
USDA Zone 8b: to -9.4 C (15 F)
USDA Zone 9a: to -6.6 C (20 F)
USDA Zone 9b: to -3.8 C (25 F)
USDA Zone 10a: to -1.1 C (30 F)
USDA Zone 10b: to 1.7 C (35 F)

Sun Exposure:
Full Sun
Sun to Partial Shade

Plant has spines or sharp edges; use extreme caution when handling

Bloom Color:
Magenta (Pink-Purple)

Bloom Time:
Late Spring/Early Summer


Other details:
Drought-tolerant; suitable for xeriscaping
Average Water Needs; Water regularly; do not overwater
Suitable for growing in containers

Soil pH requirements:
6.1 to 6.5 (mildly acidic)
6.6 to 7.5 (neutral)
7.6 to 7.8 (mildly alkaline)

Patent Information:

Propagation Methods:
From woody stem cuttings
Allow cut surface to callous over before planting
From seed; direct sow after last frost

Seed Collecting:
Allow unblemished fruit to ripen; clean and dry seeds
Unblemished fruit must be significantly overripe before harvesting seed; clean and dry seeds
Properly cleaned, seed can be successfully stored

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There are a total of 23 photos.
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2 positives
No neutrals
No negatives

Gardeners' Notes:

Positive dumblady On Oct 14, 2010, dumblady from Spring Hill, FL wrote:

Very cold hardy! I purchased this cactus at Lowe's when it was 3-4" tall in Spring 2009. Transplanted to a larger pot & kept it in that pot for a year. Left it unprotected outside last winter here in zone 9a. In Jan we had a terrible cold spell where temps went down in the mid teens at night for a couple weeks. We had much freeze damage & even lost several citrus trees & cactus plants, but this wonderful cactus remained completely unscathed! It's grown several inches since then. I've just put it in the ground last week & am looking forward to watching this beautiful cactus grow big & tall.

Positive Xenomorf On Jun 3, 2004, Xenomorf from Valley of the Sun, AZ (Zone 9b) wrote:

Propagation: Seeds


This plant has been said to grow in the following regions:

Green Valley, Arizona
Phoenix, Arizona
Scottsdale, Arizona
Apple Valley, California
Castro Valley, California
Hayward, California
Hesperia, California
Pleasant Hill, California
San Diego, California
San Marino, California
Sonoma, California
Spring Valley, California
Templeton, California
Valley Center, California
Vista, California
Spring Hill, Florida

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