Pilosocereus Species, Blue Columnar Cactus, Facheiro Azul

Pilosocereuspachycladus

Family
Cactaceae (kak-TAY-see-ee)
Genus
Pilosocereus (pil-oh-so-KER-ee-us)
Species
pachycladus (pak-ee-KLAD-us)
Synonym
Sun Exposure
Full Sun
Sun to Partial Shade
Foliage
Height
6-8 ft. (1.8-2.4 m)
8-10 ft. (2.4-3 m)
10-12 ft. (3-3.6 m)
12-15 ft. (3.6-4.7 m)
15-20 ft. (4.7-6 m)
20-30 ft. (6-9 m)
30-40 ft. (9-12 m)
Spacing
24-36 in. (60-90 cm)
36-48 in. (90-120 cm)
Hardiness
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)
USDA Zone 11: above 4.5 °C (40 °F)
Danger
Plant has spines or sharp edges; use extreme caution when handling
Bloom Color
White/Near White
Bloom Time
Mid Summer
Other Details
Category
Cactus and Succulents
Water Requirements
Drought-tolerant; suitable for xeriscaping
Average Water Needs; Water regularly; do not overwater
Foliage Color
Where to Grow
Can be grown as an annual
Bloom Characteristics
Bloom Size
Other details
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
Non-patented
Propagation Methods
From woody stem cuttings
From softwood 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
Regional

This plant is said to grow outdoors in the following regions:

Mesa, Arizona

Peoria, Arizona

Phoenix, Arizona(2 reports)

Scottsdale, Arizona(2 reports)

Surprise, Arizona

Tucson, Arizona

Hayward, California

Mission Viejo, California

Oceanside, California

Reseda, California

San Diego, California

San Leandro, California

Santa Barbara, California

Spring Valley, California

Thousand Oaks, California

Valencia, California

Phoenixville, Pennsylvania

Austin, Texas

show all

Featured Videos

Gardener's Notes:

5
positives
1
neutral
0
negative
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S
Peoria, AZ (Zone 9b) | October 2012 | positive

This is a nice cactus for a splash of unusual color in your arid garden. I have several in the ground as well as a few in planters. Her...Read More

F
Vacherie, LA (Zone 9a) | June 2011 | positive

This is a beautiful glaucous (bluish-silver) cactus with an elegant habit (growth form) that makes it look like a miniature blue Saguaro....Read More

B
Hayward, CA | May 2006 | positive

It is NOT hardy to 10f. If anything, It is more tropical than the common Cereus.

X
Phoenix, AZ (Zone 9b) | February 2005 | positive

There are many columnar cacti that are blue, this one is a bluer one. The most 'common' names are "Facheiro, Facheiro Azul & Mandacarú d...Read More

P
Acton, CA (Zone 8b) | December 2004 | positive

according to recent literature, the proper name is now Pilosocereus pachycladus, and azureus is a synonym... and 10 years from now, it wi...Read More

B
Thousand Oaks, CA | June 2001 | neutral

This is one of the most spectacular columnar cacti that can be grown in the warmer, drier areas of the US. It is the most amazing turquo...Read More

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