Echinopsis Species, Achuma, Aguacolla, Saint Peter Cactus, San Pedro Cactus

Echinopsispachanoi

Family
Cactaceae (kak-TAY-see-ee)
Genus
Echinopsis (ek-in-OP-sis)
Species
pachanoi (puh-KAH-no-ee)
Synonym
Trichocereus pachanoi
Cereus pachanoi
Sun Exposure
Full Sun
Sun to Partial Shade
Foliage
Height
12-15 ft. (3.6-4.7 m)
15-20 ft. (4.7-6 m)
20-30 ft. (6-9 m)
Spacing
4-6 ft. (1.2-1.8 m)
Hardiness
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)
Danger
All parts of plant are poisonous if ingested
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
Suitable for growing in containers
Bloom Characteristics
Flowers are fragrant
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 outdoors in fall
Seed Collecting
Remove fleshy coating on seeds before storing
Allow unblemished fruit to ripen; clean and dry seeds
Properly cleaned, seed can be successfully stored
Regional

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

Birmingham, Alabama

Gilbert, Arizona

Green Valley, Arizona

Phoenix, Arizona(3 reports)

Alpine, California

Apple Valley, California

Capistrano Beach, California

Davis, California

El Macero, California

Escondido, California

Fresno, California

Garden Grove, California

Hayward, California

Highgrove, California

Huntington Beach, California

Los Angeles, California

Mckinleyville, California(2 reports)

Ontario, California

Pasadena, California

Pittsburg, California

Pomona, California

Rosedale, California

San Diego, California

San Francisco, California

San Jose, California

San Leandro, California

Spring Valley, California

Templeton, California

Union City, California

Vacaville, California

Ventura, California

Crystal River, Florida

Land O' Lakes, Florida

Miami, Florida

Tampa, Florida

Kenner, Louisiana

New Orleans, Louisiana(2 reports)

Henderson, Nevada

Las Cruces, New Mexico

Grenoble, Rhône-Alpes

Cookeville, Tennessee

Lafayette, Tennessee

Austin, Texas

Dallas, Texas

Houston, Texas(2 reports)

show all

Featured Videos

Gardener's Notes:

11
positives
1
neutral
0
negative
Sort By:
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D
San Diego, CA (Zone 10a) | March 2015 | positive

I bought a 1 gallon pot with two cuttings at Home Depot about a year ago. I repotted each cutting into its own 1 gallon pot. Presently, e...Read More

M
Crystal River, FL | December 2013 | positive

Would be nice to see less information about these being psychoactive. We get the point already. I want to see more cultivars being produ...Read More

S
Fresno, CA | March 2011 | positive

I absolutely love this plant! This is the species of cactus that first got me into succulents. Grows extremely well in central valley C...Read More

M
Birmingham, AL | September 2009 | positive

I've been growing these for years out in Bakersfield, California. I dragged one to New Orleans with me and left most of it at a friend's ...Read More

H
Lecompton, KS | August 2009 | positive

People don't realize how cool and amazing this plant really is. If a piece were to break off and fall under cover or just can't find ligh...Read More

S
Lauderhill, FL (Zone 10a) | July 2008 | positive

I found this cactus abandoned and took it home. In the 3 or so months I have had it, it has grown several inches and developed several f...Read More

P
Union City, CA | October 2006 | positive

When I bought my house in Fremont, CA, one of these was abandoned out front in a 3g pot. I just left it where it was and watered it duri...Read More

S
S
| November 2005 | positive

I'm growing this cactus for about 2 months from seeds, and I think that they are doing fine. It's almost winter here in Portugal, lots of...Read More

H
H
Austin, TX (Zone 8b) | March 2005 | positive

This is the only cactus I own and so far I rather like it. In the spring it will put out a bud which will become another long cactus spi...Read More

X
Phoenix, AZ (Zone 9b) | January 2005 | neutral

Flowers are white, fragrant and nocturnal (another night blooming cereus).
The people of Tarahumara and Seri of Mexico have long u...Read More

R
R
Westmoreland, TN (Zone 7a) | December 2004 | positive

It is a fast growing cactus I have it growing in a large pot of Peace lily's.
I would like to set it out in the yard but haven't f...Read More

T
New Orleans, LA | June 2004 | positive

This is the easiest and fastest growing cactus I've owned. Grows about a foot a season and will tolerate a lot of rain without rot. We ...Read More

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