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san pedro cactus new mexico 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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★★★★★ 5
Really pleasantly sour and delicious
Flavor Name: Tangerine, Watermelon, Blue Raspberry
Absolutely delicious and addictive! The sour is very sharp and the sweet is flavorful, not just sugary. I will buy these regularly.
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Reviewed in the United States on April 15, 2026
★★★★★ 5
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Flavor Name: Tangerine, Watermelon, Blue Raspberry
Gosshhh these things are so good and take me right back to when I was 12 years old holy crap I can’t even remember the name of those things but we all remember them. These are they just with a different name and better I can’t believe it I’ve been searching for them since I was 15 when they disappeared. I’m writing this then going to buy more before they sell out or disappear I’m gonna stock pile not gonna get me
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Reviewed in the United States on June 1, 2026
★★★★★ 5
A Clear Concise Precis of a Complex Historical Era
Format: Paperback
R.W. Southern's book titled WESTERN SOCIETY AND THE CHURCH IN THE MIDDLE AGES is a readable account of the Medieval Catholic Church from c 750 to c. 1450. Southern concisely explained the achievements, successes, and failures. According to Southern, the achievements and successes far outweighed the failures and wrong doing.
Southern's book began with the special relationship between the new "barbarian" secular rulers and the Catholic clergy especially the monks and bishops. The fact that most secular rulers were not literate especially in the use of Latin, they relied on learned Catholic clergy. The Catholic clergy became crucial and both they and the secular rulers relied on each other. While Charlemagne (768-814)had a revered status as the defender of the Latin West, Southern mentioned his reliance on Catholic clergy. Charlemagne could read,but he never learned to write. He was aware of his own deficiencies and started the Palace School at Aachen where, among others, Alcuin (735-804) and other learned men expanded learning at a time called the Carolingian Renaissance. What readers should appreciate is that without Catholic clergy and monks, learning would have disappeared in Western Europe. Southern was very clear about this.
The Medieval Catholic authorities faced other challenges. Long simmering feuds existed between the Byzantine Greek Orthodox Church authorities and the Latin Roman Catholic authorities. During the eighth century and again in 1054,the official reasons for tensions were the use of icons (The Iconoclastic Controversy) and the status of the Pope. As Southern wrote, these tensions were a cover for the disputes between the Italians and Byzantine Greeks over Byzantine control of parts of Italy. What the Greek Orthodox and Byzantine authorities did not want to realize was that the Latin West including the Popes were their only salvation vs. the Islamic Seljuk Turks especially after the Byzantine defeat at Manzikurt in 1071. In 1422, Pope Martin V (1417-1471)reminded the Byzantine religious and secular rulers how much they relied on the Latin West. In other words, Pope Martin V demanded concessions if the Byzantines expected help vs. the Turks. Because of the lang standing traditions the Byzantines had, they refused to face their doom which occurred in 1453. Southern's description of this dilemma was well presented.
An achievement that Southern emphasized was the development of Canon Law. Increased trade, urbanization, and political power led to conflicts between secular rulers and Catholic authorities. Some of the Medieval Popes were known as "The Lawyer Popes" such as Pope Alexander III (1159-1181), especially Pope Innocent III (1198-1216), and Pope Pope Gregory IX (1227-1241). While the Popes could and sometimes used excommunication and interdict to intimidate secular rivals, the problem became acute because of too much reliance on these spiritual weapons.
Not only did the Popes exert power and influence, the Catholic bishops also had considerable influence. The Cathoic bishoporics existed long befor the monastic orders and the friars. The ideal for bishops was Pope Gregory's (590-604)work titled PASTORAL CARE. Due to the bishops' position of power and status, many became too involved with poltical situations that mitigated Pope Gregory I's ideal. Bishops had to enforce discipline, show wisdom, and administer effectively. Southern mentioned some of the bishops who were effective and some who were inept. For example Bishop Odo Riguad (1247-1276) was "firm but fair." He was lenient for qualifications for those who wanted to enter Holy Orders and was reasonable, in fact kind, re reconcilation. Yet, he expected those under his authority to comply with their priestly duties. On the other hand, John Peckham who was the Archbishop of Canterbury (1279-1292)was obstinate, incompetent, and not capable for the position. After the Papal Election Decree in 1059 and the Investature Controversy, the Popes wanted the local clergy to decide on the appointment of bishops. Southern told readers that even a Pope as powerful as Pope Innocent III (1198-1216)preferred local selection. While Popes could intervene if no decision could be reached, they preferred not to impose what Southern called "The Royal Road."
While the bishoporics existed prior to the monastic orders and friars, the latter groups were also crucial to the Catholic Church and the Latin West. The dominant orders included the Benedictines started by St. Benedict (480-544) whose Benedictine Rule was the standard until c. 1050. The work of the monastic orders re learning can never be underestimated especially since they wrote and hand copied books including the Bible long before the invention of the printing press. Their influnce was such that a Beneditine was made Pope-Pope Gregory I (590-604). Other orders such as the Cistertians and Augustinians later developed separate from the Benedictines. The best known of the Cistertians was St. Bernard of Clairvaux (1090-1153)whose rhetoric and conservative views were a check on unbridled enthusiams. The friars were orders of men and women who left the cloister to appeal to the masses. St. Dominic (1170-1221) started the Order of Preachers or Dominicans as a learned society of men and woman to combat heresy. The Friars Minor (the Franciscans) were started by St. Francis of Assissi (1182-1226),and these men and woman started as an order to help the poorest of the poor. Southern could have mentioned that St. Francis helped those even God ignored. The Dominicans and Franciscans became dominant teachers in Catholic universities and revived interest in Ancient Greek thought. These men and women also made signficant contributions re science and mathematics. A major reason for the creation of the friars was the gradual increase of urbanization. As Southern reminded readers, without towns, there would have been no friars. Without universities, the friars would never have been great.
By the middle of the 14th. century (the 1300s), the Scholastic achievements faded because of the trivial debates. This led to a revival of Catholic mysticism such as Thomas a Kempis' (1380-1471)who wrote IMITATION OF CHRIST and later St. Ignatius Loyola's (1491-1556) SPIRITUAL EXERCISES. As Southern warned did such mysticism lead to false piety?
Southern did an effective job re Medieval Catholic Church History. He could have emphasized the work of some of the giant intellects such as St. Albertus Magnus (1193-1280) and St. Thomas Aquinas (1225-1274). Southern's treatment of Canon Law was later enhanced by Berman's book titled LAW AND REVOLUTION. Students of Church History will benefit from Southern's book. It is clear, and complexities are carefully explained. The list of Popes at the end of the book can help readers to keep track of the "players."
James E. Egolf
November 5, 2013
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Reviewed in the United States on November 6, 2013
★★★★★ 5
From the Bones of Peter
Format: Paperback
A brief forward to this work is in order. R.W. Southern stands among England's finest historical scholars of the twentieth century and was knighted by the Queen in 1975. The publisher, Penguin, has worked to bring the best of the humanities to an inquisitive public for almost a century. Southern's medieval survey is thus an eminently readable text buttressed by a profound grasp of both trends and minutiae. Our work at hand is one of seven independent works in Penguin's history of the Church series. Southern's contribution was first published in 1970 and updated in 1990.
Historians are bringing more interdisciplinary tools to the study of medieval history, from climate to demographics to agriculture. Southern is the product of an earlier and more basic methodology, where the nexus of Church and Society stood as the interpretive key to an understanding of the times. I first read "Western Society and the Church" shortly after its original release in 1970. Reading it again in 2014 impressed upon me how compatible Southern's comprehensive overview stands with what we now know in greater detail about mystical movements, cold winters, trade, exploration, and plague, among other factors. Despite the wide sweep of his narrative, Southern's conclusions are drawn from meticulous examination of records, with useful numerical charts interspersed from time to time.
Southern treats of the years 800-1500 CE and the provenance of the Roman Catholic Church in that era. The title's phrasing of "Western Society and the Church" is a pregnant one. The organism of the Church and western society as a whole shared a common cosmology or world vision. Medieval man did indeed understand himself to be living in a "Middle Age" between the time of Christ's first and second coming. However, Southern's overview provides many instances where the major organs of the Church and western society were hardly of one mind, either.
Not surprisingly Southern devotes considerable attention to the changing Petrine ministry, which in 800 was not enjoying its finest hour. Besieged by Islam and other foreign peoples, belittled by Eastern Christianity from Constantinople, and its own house in disarray, Rome somehow maintained a religious and psychological hold in the popular mind. As reliquary of the bones of Peter, Rome and its successive bishops never entirely lost hold of mystery and supremacy in the early dark medieval era. In popular thought at the time, the pope was a living vicar of Peter. "Though men came to Rome in the first place to visit the (bones of the) Apostle, they prostrated themselves before the pope." (95)
What would maintain Church order through dark times, Southern implies, was an inner sense among men of the times that God's order (and wrath) was mediated by the Church. Fractiousness between clergy and laity was common, but fear of damnation trumped all. Only the most cynical of men would knowingly dismiss hell fire
And thus the Vicar of Peter became the Vicar of Christ. It did not hurt the cause that shrewd popes buttressed their positions with questionable emphases upon more ancient secular entitlements dating to the times of the Constantinian/Christian empire of the West. The heritage of Charlemagne and the forgery of the "Donation of Constantine" played their parts, but the permanent breech with the East may have been a deciding factor as well. Pontiffs such as Gregory VII came to understand their office as specific, detailed, and immediate. To speak anachronistically, popes became managers of a far flung bureaucracy of order and sanctification in what was now a Western European Roman Catholic venture.
By 1100 there was plenty for popes to do. The relationship between pastoral appointments (bishops and abbots, for example) and the attendant financial compensation became quite complex. The papal office became official arbiter over disputes between various parties, to the degree that the majority of high medieval popes were drawn from the legal profession. Southern describes a medieval Church of prelates, scribes and lawyers crisscrossing Western Europe in the name of the Pope with portfolios of litigation and judgment. It does not miss the author’s attention that the papacy was also the greatest broker of spiritual reward and punishment, specifically its powers of excommunication and redemption, the latter becoming a major target of reformers at the end of the era.
Southern contends that religious orders extended major spiritual and practical influence throughout the Middle Ages. In 800 the Benedictine Order, whose legacy would include spiritual efficacy, scholarship, good order, and physical enhancement of the environment, was at its apex. Southern proceeds to outline in some detail how the inevitable decline of fervor in a predominant order of the day would inspire the development of a new order to address developing contemporary concerns. As successors of the Benedictines, Southern identifies the Augustinians, the first medieval religious movement to embrace a generic rule derived directly from the Gospels as well as rigorous and moderate variants of daily life style. The next was the Cistercians, who sought to return to the letter and spirit of St. Benedict's rule. Their quest for purity and escape from the world led them to flee to the outer edges of Western Europe and consequently to develop these lands, a major social contribution. Southern sees the Franciscan and Dominican moments of the thirteenth century respectively as the Cistercian and Augustinian reforms for this later era of European society.
Southern's penultimate chapters is devoted to what he called he called the fringe orders; today we would think of these in part as the Beguines and the multitude of spontaneous mystical and devotional movements associated with the fourteenth and fifteenth centuries. His final chapter, "A Confusion of Tongues," continues his account of spiritual diversification leading to early Protestant thought and practice.
The tenor of this book is what one would expect of the relaxed scholar/gentleman unfolding his description of this age with a profound but understandable style. He shares a lifetime of scholarship in an inviting way to those entering the Middle Ages for the first time.
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Reviewed in the United States on March 9, 2014
★★★★★ 5
Excellent treatment of a narrow subject: how society shaped the church
Format: Paperback
This book is not a comprehensive overview of the church from 700-1500, nor is it a narrative treatment or an introduction. This book is highly selective, focusing on one central theme. Its strengths are in its organization and in the examples it gives to illustrate its theme. These examples are concrete, vivid and use quotations from original documents to excellent effect.
The theme of the book is how society shaped the church. Southern examines the main institutions of the church -- the papacy, bishops, religious orders and fringe orders -- and shows how the needs and interests of society molded each. Perhaps having written on 1000-1200 in other books, for me, the strongest insights Southern makes here are on the periods 750-1000 and 1200-1500.
Insights that particularly struck me: the importance of magic from 750-1000; the evolution of bishops, from supporting local rulers to supporting the pope; the importance of the Augustinian canons in the twelfth century, seeing them as one end of a pole, with the Cistercians on the other end and the Benedictines in the middle; the role of Franciscans and Dominicans in supporting scholars in the thirteenth century; and the fringe orders -- the book has one of the best treatments of the Brethren of the Common Life from the fourteenth century that I have come across.
The book is highly selective. There is no treatment in this book on intellectual life (the "new learning") or artistic life, nor is there much on the heresies of the period or popular religion (the "new piety"). What the book does select to treat, it does so in a deep, highly readable, substantial way. One will definitely come away with how the demands of society molded the church. Highly recommended!!
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Reviewed in the United States on February 24, 2021