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san pedro cactus masculine Buy San Pedro Cactus Phoenix, AZ | Echinopsis pachanoiA Towering Columnar Cactus for Phoenix Desert Gardens San Pedro The San Pedro Cactus (Echinopsis pachanoi) is one of the fastest growing columnar cacti available for Phoenix landscapes. Native to the Andes Mountains, this striking blue green cactus grows tall, ribbed columns that branch with age into dramatic multi stemmed specimens. San Pedro can reach 1020 feet tall in the Phoenix Valley, adding bold vertical structure to xeriscape gardens,
A Towering Columnar Cactus for Phoenix Desert Gardens — San Pedro
The San Pedro Cactus (Echinopsis pachanoi) is one of the fastest-growing columnar cacti available for Phoenix landscapes. Native to the Andes Mountains, this striking blue-green cactus grows tall, ribbed columns that branch with age into dramatic multi-stemmed specimens. San Pedro can reach 10–20 feet tall in the Phoenix Valley, adding bold vertical structure to xeriscape gardens, courtyard plantings, and modern desert designs. It produces spectacular large white flowers that bloom at night during summer — a rare treat for any garden. Whether you’re creating a sculptural cactus garden in Scottsdale, anchoring a Chandler desert border, or adding architectural drama to a Mesa backyard — San Pedro delivers fast growth and jaw-dropping form.
San Pedro Cactus Plant Details
| Attribute | Detail |
|---|---|
| Scientific Name | Echinopsis pachanoi (syn. Trichocereus pachanoi) |
| Common Names | San Pedro Cactus, Saint Peter Cactus |
| Mature Height | 10–20 feet |
| Mature Width | 4–6 feet (multi-branched clump) |
| Growth Rate | Fast for a cactus — 1–2 feet per year in Phoenix |
| Sun | Full sun to light shade. Handles reflected heat well. |
| Water | Low once established. Drought-tolerant but appreciates occasional deep watering. |
| USDA Zones | 9–11 (Phoenix is Zone 9b–10a) |
| Soil | Well-draining required. Thrives in sandy, rocky Arizona soils and handles caliche with drainage. |
| Foliage | Evergreen — blue-green ribbed columns year-round |
| Bloom | Large white nocturnal flowers in summer — fragrant and spectacular |
San Pedro Cactus Uses in Phoenix Landscapes
Sculptural Focal Point & Cactus Gardens
San Pedro’s tall, ribbed columns create dramatic vertical architecture in any desert garden. Plant a single specimen as a living sculpture in a Scottsdale courtyard, or group 3–5 for a columnar cactus grove effect. Pair with Golden Barrel, Totem Pole Cactus, and Mexican Fencepost for an all-columnar desert statement garden.
Modern Desert Borders & Property Screens
Because San Pedro branches and fills in with age, it makes an effective living screen or border plant. Space 3–4 feet apart along a Chandler property line or Gilbert fence to create a striking green wall. The columns grow fast enough to provide meaningful screening within 3–5 years.
Pool-Friendly & Low-Litter Plantings
San Pedro is an excellent pool-adjacent plant — it produces virtually no leaf litter, requires minimal trimming, and its smooth columns and minimal spines make it safer than many cacti. Plant along Tempe and Mesa pool perimeters for a clean, architectural look with zero maintenance debris.
Best Time to Plant San Pedro Cactus in Phoenix
Spring (March–May) is the ideal planting window. Warm soil and rising temperatures promote fast root establishment and active growth. Fall (October–November) is the second-best option. Avoid planting in winter — San Pedro is slightly frost-sensitive and roots best in warm soil.
How to Plant San Pedro Cactus
- Dig wide, not deep — excavate 2x the root ball width at the same depth. Cacti have shallow root systems.
- Ensure excellent drainage — break through any caliche layer. San Pedro will rot in standing water.
- Backfill with native soil — no amendments needed. Sandy, rocky Arizona soil is ideal.
- Spacing — 3–4 feet apart for a border or screen; 5+ feet for standalone specimens.
- Let the cut callus — if transplanting a cutting, let the cut end dry and callus for 1–2 weeks before planting.
- Gravel mulch — 2–3 inches of decomposed granite or gravel. Never use organic mulch that retains moisture.
Watering San Pedro Cactus in Phoenix
First Year Watering Schedule
- Weeks 1–2: Every 5–7 days, light watering to settle soil
- Months 1–2: Every 7–10 days
- Months 3–6: Every 10–14 days
- After Year 1: Every 2–3 weeks in summer; monthly or less in winter
Drip Irrigation
Place 1 emitter (1–2 GPH) 12–18 inches from the base. San Pedro appreciates more water than most columnar cacti, which helps it maintain its fast growth rate. However, always let the soil dry completely between waterings. Overwatering causes root rot.
How fast does San Pedro grow in Phoenix?
San Pedro is one of the fastest-growing columnar cacti, adding 1–2 feet per year in Phoenix with regular summer watering. A 5-gallon plant can reach 6–8 feet within 3–4 years.
Is San Pedro frost-hardy in Phoenix?
San Pedro handles most Phoenix winters well, tolerating temps down to about 25°F. During rare hard freezes, drape frost cloth over the plant. Established specimens are more cold-hardy than young ones.
Does San Pedro bloom?
Yes — mature San Pedro cacti produce large, spectacular white flowers that open at night during summer. The blooms are fragrant and typically last one night, attracting moths and bats. Plants usually begin blooming once they reach 4–6 feet tall.
How does San Pedro compare to Totem Pole Cactus?
Both are tall columnar cacti, but San Pedro has visible ribs and small spines, while Totem Pole (Pachycereus schottii ‘Monstrosus’) is smooth and spineless with a knobby texture. San Pedro grows faster and produces showy flowers. Both are excellent choices for Phoenix desert gardens.
You May Also Like
- Totem Pole Cactus — a smooth, spineless columnar cactus with a unique sculptural form.
- Mexican Fence Post — a tall, columnar cactus often used as a living fence in desert landscapes.
- Golden Barrel Cactus — a round, golden-spined cactus that contrasts beautifully with tall columnar species.
- Ocotillo — a spindly desert native with fiery red spring blooms, perfect for adding movement to cactus gardens.
How Many San Pedro Cactus Do I Need?
San Pedro works two ways: as a single sculptural specimen, or branched together into a fast-growing columnar screen. For a focal point, plant one and give it 5 to 6 feet of clear space so the multi-stemmed form can spread. For a living screen along a wall or property line, space the columns 3 to 4 feet apart:
| Run length | Plants at 3.5 ft spacing |
|---|---|
| 10 ft | 3 plants |
| 20 ft | 6 plants |
| 30 ft | 9 plants |
| 40 ft | 11 plants |
For a grove effect, group 3 to 5 columns in odd numbers, each 3 to 4 feet apart, so the ribbed stems read as one bold cluster.
San Pedro Cactus Season-by-Season in Phoenix
- Spring (Feb-Apr): Prime planting window. Warm soil drives fast root establishment and the first flush of new column growth.
- Summer (May-Sep): Peak growth season, adding 1 to 2 feet with regular deep watering. Large fragrant white flowers open at night and draw moths and bats. Handles full reflected heat off walls and pavement.
- Fall (Oct-Nov): Second-best planting window and continued growth before cooling. Taper watering as temperatures drop.
- Winter (Dec-Jan): Evergreen blue-green structure holds all winter. Hardy to about 25°F: during a hard freeze, drape frost cloth over the columns, especially on young plants.
At a Glance
✔ Heat-Loving (Reflected-Heat Tolerant) ✔ Drought-Tolerant ✔ Pollinator-Friendly ✔ Pool-Friendly (Low-Litter) ✔ Evergreen ✔ Low-Maintenance ✔ Deer & Rabbit-Resistant ✔ Cold-Hardy to 25°F
Plant It With
- Totem Pole Cactus: a smooth, spineless column that contrasts San Pedro's ribbed texture.
- Mexican Fence Post: another fast columnar for an all-vertical desert screen.
- Golden Barrel Cactus: a round golden globe that grounds the tall columns.
- Blue Myrtle Cactus: branching blue-green columns that echo San Pedro's color.
Is San Pedro Cactus Right for Your Yard?
San Pedro thrives in full sun to light shade with fast-draining soil, and it tolerates reflected heat off walls and pavement better than most columnar cacti. Give it room to branch and break through any caliche layer so water never pools at the roots. It is not a fit if your spot stays wet or shaded, or if you cannot cover it during a rare hard freeze while it is young.
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4.4 ★★★★★
Based on 29 reviews
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Product Reviews
★★★★★ 4
Worthwhile Read
Format: Hardcover
Extremely insightful.
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Reviewed in the United States on May 11, 2026
★★★★★ 5
Beyond the Usual Left/Right bifurcation
When thinking about Howard Zinn's "A People's History of the United States, I am reminded of E.H. Carr's seminal work "What is History?" whereby he stated: "The belief in a hard core of historical facts existing objectively and independently of the interpretation of the historian is a preposterous fallacy, but one which it is very hard to eradicate". As Carr famously stated, millions of people had crossed the Rubicon, but only Julius Caesar's crossing in 49 BC has been given normative value by historians. For those familiar with the philosophical treatment of historical understanding in Tolstoy's War and Peace, this sentiment will ring true. A People's History is designed to give voice to those millions who passed the rubicon but never found their way into the annuals of history.
A couple of points. This book was intended to be a supplement as opposed to a strictly chronological account of history that will give you the bullet points for the most important people, dates and events. [sic] It is not meant to be a replacement for a more standardized textbook.
Secondly, Zinn did not hate America, and he in fact stated:
"I want young people to understand that ours is a beautiful country, but it has been taken over by men who have no respect for human rights or constitutional liberties. Our people are basically decent and caring, and our highest ideals are expressed in the Declaration of Independence, which was that all of us have an equal right to life, liberty and the pursuit of happiness. The history of our country, I point out in my book, is a striving, against corporate robber barons and war makers, to make those ideals a reality-and all of us, of whatever age, can find immense satisfaction in becoming part of that."
Regardless of your political position, between the Great Recession and the Iraq war, there is a relevance to this sentiment that cuts across political lines.
Now, what one will notice in the bulk of the one star reviews is the sense that either the reviewer has not read the book, they copied and pasted their criticism from another source or they have strictly given the book one star because it does not conform with their view of reality. "Blame America first", "socialism", "communism", "Marx, "liberal propaganda", you can easily get the gist of the talking points because many American conservatives apparently got the same memo in dismissing anything they don't agree with. The disservice they do to themselves and the sphere of ideas in the outright dismissal of any perspective which does not conform to their own is truly sad. When someone gives a book one star merely for not conforming to their view of reality,they have obviously lost the plot.
In university I knew many conservative history professors who liked and used Zinn's work. They believed it was important to incorporate and deal with the claims that Zinn made. You cannot whitewash history and blindly stick by the most comforting narrative. That does not mean that one should agree with Zinn's conclusions or think that he has a monopoly on the truth. Zinn himself would not have wanted that.
For those who claim Zinn is a socialist or any other kind of -ist, that he is not completely objective, they have obviously never done any research. Pure positivism was dismissed long ago. Even Max Webber started that our subjective bias comes in the moment we choose to study something, for by seeing the subject matter as valuable, we have placed a normative value on it. There is no pure value objectivity, stating one's position and bias from the outset is what responsible social scientists do these days. A dryly academic text with an obvious bias concealed by a detached form of writing gives a falsely omniscient perspective whose reality is psychological but not objective. However they write, they are just a person, and without expressing their biases it will inevitably turn up in their work without necessarily being obvious. This is far more dangerous than what Zinn does in stating his bias from the outset. So it is a red herring to dismiss Zinn for having a perspective. We all have one and it will come into whatever we do.
There is no knowable, objective reality (for humans) living in the Platonic world of perfect forms. History was a puzzle of immeasurable size that was blown apart and the pieces scattered over the cosmos. The vast majority of the pieces are gone, never to return. We are stabbing at an imperfect speculation, not ultimate truth when we engage in historical study. Any physicist will tell you that the particle wave duality of light has pretty much closed the book on the notion that we can objectively, perfectly know anything.
This book is important because the poison of partisan politics has come to dominate even the dialogue of academic research. If the sole criterion for giving a book one star is the notion that you don't agree with its thesis, then you obviously live in a fragile world and are incapable of being challenged intellectually. This book is of the upmost importance for the conservative to read and digest. In developing a coherent narrative of the United States, you need to wrestle with its sins and determine, despite our historical shortcomings and transgressions, what is it that makes this imperfect union the pinnacle of nation states if one agrees with that prospect. For the liberal, you should not view Zinn's work as the last word on anything, but rather use it as a stepping stone to further develop your own historical understanding and consider how well has American done on a relative scale in light of the political, societal and human failings that have marred all human civilizations. This book is well worth the challenges it presents, and should be a 5 star treat for the conservative who loves his country and wants to develop the most cogent and nuanced argument as to why that is the case despite those unsettling realities to be found in this book as well as the liberal who wants to give voice to his disaffection with certain aspects of American society and the reasons why we need to change it. This is not another tool in the mindless and poisonous Manichean bifurcation of American politics. It is a vehicle to help you strengthen and deepen your understanding of US history, regardless from which direction you are coming. Recommended to all who are interested in the journey of learning as opposed to a presupposed outcome that serves a vested interest.
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Reviewed in the United States on February 13, 2010
★★★★★ 5
A 50 carat learning gem
The teaching of American history in elementary and middle schools reminds one of the cleaning of a commode: any rings or crud are removed and the bowl is disinfected. It then looks shiny and pretty, as if no foul stuffs were ever deposited in it. The tall tales and antiseptic methodologies employed in the teaching of American history in these citadels of bias are finally being countered by some historians, who are also clearly biased but self-consciously so. They do not hesitate to study the foul stuffs that have been part of the history of the United States, and are willing to put up with the strong odors thereof. What results in their writings is a compilation of the facts that are left unreported by the sycophants of established educational hierarchies. The picture they paint is not a pretty one, but for those who desire the bare, naked truth, and not the stale platitudes of whitewashed historical analysis, it can be a grand viewing.
The author of this book is one of these new historians, and he does not hesitate to dig deep into the real stories that have remained hidden for decades. Historical analysis of course is more then muckracking, and requires an accounting of what has occurred in the past without blinders. It also must put to rest the notion that historical events are controlled by a ruling elite, and the latter are not the distinguishing features of history. History is not a history of kings, queens, and princesses. They play a role but it is an ancillary one. The title of this book refreshingly reminds us of this. History is governed and directed by the actions of many individuals, known and unknown. The author calls them "the people", and their story is told unabashedly in this book.
The author is clearly a socialist, but his attitude is one of a healthy skepticism towards government, and justified distrust of the military establishment. He reminds us that the draft was in place as early as the Revolutionary War, as were the exceptions granted for avoidance of it. For example in Connecticut Yale students and faculty were exempted from the draft, as were ministers and various government officials. There was also the familiar schism between officers and "ordinary" soldiers, and any in the latter class who chose not to respect this distinction were whipped severely. Wealthy individuals dominated the Continental Congress, but most "ordinary" soldiers were not getting paid. Some groups of "ordinary" soldiers rebelled and some executed by firing squad when the rebellion was suppressed (in one case by soldiers of George Washington himself who led the suppression). The author's commentary and documentation on the Revolutionary War certainly act as a counterexample against the belief that this war had universal support and thought of as a noble cause by the general populace of the time. The Revolutionary War, like all other wars, was an ugly, messy affair, and had its share of false patriotism, brutality, and cowardice, and it affected many other peoples that had no interest or stake in it: native American tribes such as the Iroquois and the Mohawk. These tribes did not come under the umbrella of the Declaration of Independence. Some of these tribes therefore launched, with complete justification, a guerilla war against the new American citizenry, especially when the latter decided to push westward and indulge itself in the forced acquisition of land.
The author tells us of the smallpox biological warfare launched against the Appalachian tribes by the British, causing a major epidemic. He tell us of the thousands of black slaves who fought with the British in the Revolutionary War, as did the majority of the Indian tribes. He tell us of the keeping of slaves by Thomas Jefferson throughout his life, of the fact that most of the authors of the Constitution were men of wealth, and none were slaves, indentured servants, women, or men without property. He tell us of Shay's rebellion and its counter, the Riot Act, which allowed authorities to keep people in jail without trial, and of the defiance of Anne Hutchinson against the church fathers in the Massachusetts Bay Colony. He tells us of New Jersey's rescinding of women's right to vote in 1807, of a "feminist" movement as early as the 1840's, and of the founding in 1821 of the Troy Female Seminary by Emma Willard.
The author reminds us that the war of 1812 was a conflict waged for expansion into Florida, Canada, and Indian territories, that Congress deliberately and without hesitation appropriated money for war against the Seminoles, and that President Van Buren openly bragged to Congress about the forced removal of Cherokees from lands east of the Mississippi. He reminds us of the doctrine of "manifest destiny" and its justification of the brutal war against Mexico waged by President James Polk in the 1840's with the jingoistic assistance of the newspapers (no other course would be rational some of them reported), with Mexico losing half its territory in the 1848 treaty of Guadalupe Hidalgo. He reminds us of the Anti-Renter movement in the Hudson valley of New York, and that the Renssalaer family at one time ruled over eighty thousand tenants. He reminds us of Dorr's Rebellion in Rhode Island that attacked the idea, and its perpetrators, that only landowners could vote.
So yes, there is much in this book that is fascinating and that is food for a hungry and inquisitive mind. It certainly goes against the mainstream view, and any teacher of history will probably come under fire from those who employ them if they decide to discuss the facts and analysis in this book. The history of the United States has been one of brutality mixed with brilliance, the former of which is emphasized in the pages of this book. A future treatise might emphasize the latter, and together they can give a more accurate picture of what the United States is, what it has been, and its future potential.
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Reviewed in the United States on December 30, 2006
★★★★★ 5
An amazing book ...
Format: Paperback
An amazing book. Reading the book helped me understand why the US is experiencing difficulties in "perceived righteousness" today. I would recommend it to anyone who would like to change the World for the better.
Howard Zinn is a benevolent hacker: the kind of hacker I would like my children to be, and why not: all children to be.
For me, Zinn’s A People’s History of the United States hacks history and defines a problem and offers a solution:
1. The problem: a one-sided patriotic history enslaves the masses,
2. The solution: a bottom-up, humanistic history empowers everyone and opens the doors for future reconciliations among different communities.(1)
At this critical juncture of human history both are relevant not only for the US but rather for our race.
A one-sided patriotic bias in history: at what cost?
1. hides wrongdoings and the associated guilt,
2. serves as the first line of defense to deflect current & future criticisms for the past & current mistakes,
3. tampers data gathering, silences questioning & divergence of opinions,
4. reduces communication among communities,
5. defines “the patriotic” and increases the chances of populating the armed forces,
6. defines the other: “the unpatriotic,”
7. increases insecurities,
8. evokes fears (of retribution, etc.)
9. can be misused to justify violence against “the other,”
10. builds a common memory for the masses, builds their egos so that these egos can later be exploited,
11. allows the word “culture” to be used as an equivalence: American culture = being American; (2)
12. a politician can mix these facts to incite emotional reactions of the masses and eventually reach a higher number of votes in a predetermined direction, inexpensively,
13. at school, in the media, in speeches of politicians, and during different rituals (starting with reciting the pledge of allegiance and singing of the national anthem) the patriotic history is repeated and reinforced. Under these conditions, the masses learn to repeat what is given to them. They shun away from questioning further. Their concept of free-will is replaced by a misplaced trust. They learn not to deviate from the norm: they are enslaved and are not even aware of this enslavement.
Many words lose their meaning: “a more perfect Union” “Justice” “secure the Blessings of Liberty,” “democracy.” A higher degree of cynicism and later a deep feeling of helplessness ensue. There are costs to the individual, the family, the society. Since many worldwide look up to the US morally, the use of one-sided patriotic history in the US produces world leaders who imitate bad examples. Consequently, Humanity pays dearly.
A bottom-up, humanistic history empowers everyone:
1. can eliminate ignorance,
2. can eliminate convenient forgetfulness,
3. can eliminate arrogance,
4. improve self-esteem, communication, & understanding
5. can reduce violence,
6. can empower the individuals and the masses: psychologically and economically and thus improve the quality of life,
7. can help the path to sustainable peace.
Among the different communities, the wounds are real. A one-sided history often does not address all of these wounds. Denial freezes any possibility of a reconciliation. A reconciliation process would pass through an acceptance of a historical wrong doing.
In time, mankind may realize that what Howard Zinn has started may be the building blocks of sustainable peace.
As a new year starts, I wish upon all of us: nations, creeds, ethnicities, etc. our very own Howard Zinns.
(1) In the US, these communities can be whites, blacks, American Indians, Mexicans, WASPS, Catholics, Jews, Moslems, Chinese, Japanese, etc. In Turkey, where I am from, these communities include the seculars, non-seculars, Alevites, Armenians, Greeks, Jews, Kurds, etc.
(2) Most of us are led to believe that “being” American/WASP/Jewish/Moslem/... is a “culture;” we almost always have these attributes thanks to coincidences; i.e. we are born into these “states;” how can a state that is largely a coincidence, be culture? I would suggest that only what is done through our free-will is deemed culture. Interestingly worldwide, the education systems, the media, and politicians use and propagate the word “culture” to imply largely a static state, rather than the result of a willful action.
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Reviewed in the United States on December 24, 2016
★★★★★ 5
Good quality
Format: School & Library Binding
Perfect!
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Reviewed in the United States on April 30, 2026