Peruvian Torch cactus
Encyclopedia
Peruvian Torch cactus (Echinopsis peruviana syn. Trichocereus peruvianus) is a fast-growing columnar cactus
Cactus
A cactus is a member of the plant family Cactaceae. Their distinctive appearance is a result of adaptations to conserve water in dry and/or hot environments. In most species, the stem has evolved to become photosynthetic and succulent, while the leaves have evolved into spines...

 native to the western slope of the Andes
Andes
The Andes is the world's longest continental mountain range. It is a continual range of highlands along the western coast of South America. This range is about long, about to wide , and of an average height of about .Along its length, the Andes is split into several ranges, which are separated...

 in Peru
Peru
Peru , officially the Republic of Peru , is a country in western South America. It is bordered on the north by Ecuador and Colombia, on the east by Brazil, on the southeast by Bolivia, on the south by Chile, and on the west by the Pacific Ocean....

, between about 2000-3000 meters above sea level.

Description

The Peruvian Torch (Trichocereus peruvianus) grows high in the Andean mountain deserts of Peru and Ecuador and is similar to the San Pedro cactus (Trichocereus pachanoi
Echinopsis pachanoi
The San Pedro cactus is a fast-growing columnar cactus native to the Andes Mountains of Peru between 2000–3000 m in altitude. It is also found in Argentina, Bolivia, Chile and Ecuador, and it is cultivated in other parts of the world...

) which is found in the same region.
The human use of the cactus dates back thousands of years to the northern coast of Peru and the monks of a pre-Inca culture known as Chavín
Chavín culture
The Chavín were a civilization that developed in the northern Andean highlands of Peru from 900 BC to 200 BC. They extended their influence to other civilizations along the coast. The Chavín were located in the Mosna Valley where the Mosna and Huachecsa rivers merge...

 (900 BC to 200 BC). They prepared a brew called "achuma", "huachuma" or "cimora" which was used during ritualistic ceremonies to diagnose the spiritual links to a patient's illness.

Growth

The plant is bluish-green in colour, with frosted stems, and 6-9 broadly rounded ribs; it has large, white flowers. It can grow up to 3-6 meters tall, with stems up to 8-18 cm in diameter; it is fully erect to begin with, but later possibly arching over, or even becoming prostrate. Groups of 6-8 honey-coloured to brown rigid spines, up to 4 cm in length, with most about 1 cm, are located at the nodes***, which are evenly spaced along the ribs, up to approximately 2.5 cm apart.

Variant

A short-spined variant which is nearly identical in appearance to its relative, Echinopsis pachanoi
Echinopsis pachanoi
The San Pedro cactus is a fast-growing columnar cactus native to the Andes Mountains of Peru between 2000–3000 m in altitude. It is also found in Argentina, Bolivia, Chile and Ecuador, and it is cultivated in other parts of the world...

(San Pedro cactus), is known. It is therefore possible that many misidentified plants are being sold (both as Peruvian Torch and as San Pedro), but since local variations as well as hybrids do exist (both cultivated and natural), this will obviously make proper identification difficult.

Cultivation

USDA Hardiness Zones
Hardiness zone
A hardiness zone is a geographically defined area in which a specific category of plant life is capable of growing, as defined by climatic conditions, including its ability to withstand the minimum temperatures of the zone...

: 10-12

Echinopsis peruviana can be propagated from either seeds or cuttings.

Propagation from cuttings

Like many other plants, Echinopsis peruviana can be propagated from cuttings. The result is a genetic clone of the parent plant. For example, the top 15 cm end of a cactus column can be cleanly removed with a knife. The cutting can be left to heal for about two weeks in the scattered or indirect light, by laying it upon its side. Be aware that it should be kept away from excessive moisture that will encourage growth of an opportunistic infection and receive good airflow at this time. The plant will heal by forming a calloused seal to withstand bacterial and fungal attack such as mold
Mold
Molds are fungi that grow in the form of multicellular filaments called hyphae. Molds are not considered to be microbes but microscopic fungi that grow as single cells called yeasts...

. The unrooted cutting can be either kept upright in a propped up position for an extended period of time (2+ years) without harm . Often roots will emerge from the lowest point of the plant between 3–6 months time. Rooting hormone is not required and its use may damage the soft tissues of the plant, giving rise to bacterial or fungal rot that may kill the clone.

Cuttings may be planted after the formation of a callous and before the emergence of roots in either a small pot or directly n the ground. Cuttings should be set far enough below the surface of the soil to ensure stability until the root network is formed as well as access to moisture.

Light requirements

While a cutting is establishing its root system, it should be kept protected from extremes in both light and heat.
New growth will generally signal the development of a root system and the need to start making the reintroduction into more direct light.
Insufficient light will result in undesirable narrow and elongated growth from the tip while too much direct light (especially noonday direct sun)
may result in a burning of the new growth at the center apex and the deforming of the plant.
Proper light will mimic the mountain sides native to this and other Echinopsis species. 5 hours of direct sunlight with several hours of bright indirect light seems to strike a good balance between growth and excessive hardening or yellowing due to stress.

Soil

Depending upon the local environmental conditions soil should well draining and able to hold enough moisture for a week or more without drying out. Any soil used should never be "rich" in nitrogen. These are easily identified as being dark in color and / or high in manure content. A good basic soil mixture will consist of a basic "cactus soil mix" supplemented with 25% washed sand and 35% perlite
Perlite
Perlite is an amorphous volcanic glass that has a relatively high water content, typically formed by the hydration of obsidian. It occurs naturally and has the unusual property of greatly expanding when heated sufficiently...

. Pots must be well draining and do not need to be large in order to support an extensive root network. Most beginning growers experience plant loss by root rot from using a composted soil mix that is high in nitrogen from manure in a heavy wood or peat moss matrix. This will usually compact with time. Watering will cause the microflora to turn to anaerobic respiration resulting in a change in soil Ph, killing the root system and eventual root rot.

Watering

Once established these plants will be able to handle large amounts of watering compared to other cacti genera.
Like other plants warm temperature and sunlight will result in rapid growth. Watering should take on a cycle between watering and keeping the soil moist (but not damp) with a short "drying out" period to keep soil microflora in check once every 10–14 days/ 5 days. Watering should be stopped or severely limited in the winter months when plants go dormant.

Feeding

These cacti respond well to balanced feeding that can be augmented depending upon the growers desires.
Overfeeding is not suggested as it will often result in burning the plant and microflora blooms.

Subspecies

Echinopsis peruviana ssp. puquiensis (Rauh & Backeb.) C.Ostolaza Nano

Varieties

Some varieties, with scientific invalid names, of Echinopsis peruviana are:
  • var. ancash (KK1688), San Marcos, Ancash, northwest Peru.
  • var. ayacuchensis (KK2151), southwestern Peru.
  • var. cuzcoensis (KK340), Huachac, Cuzco, southeastern Peru.
  • var. (H14192), Huntington, USA.
  • var. huancabamba, Piura
    Piura
    Piura is a city in northwestern Peru. It is the capital of the Piura Region and the Piura Province. The population is 377,496.It was here that Spanish Conqueror Francisco Pizarro founded the third Spanish city in South America and first in Peru, San Miguel de Piura, in July 1532...

    , northwest Peru.
  • var. huancavelica (KK242a), west central Peru.
  • var. huancayo (KK338), west central Peru.
  • var. huaraz (KK2152), Ancash, northwestern Peru.

  • var. matucana (KK242) Lima
    Lima
    Lima is the capital and the largest city of Peru. It is located in the valleys of the Chillón, Rímac and Lurín rivers, in the central part of the country, on a desert coast overlooking the Pacific Ocean. Together with the seaport of Callao, it forms a contiguous urban area known as the Lima...

    , central west Peru.
  • var. puquiensis (KK1689), Puquio, Apurímac Region
    Apurímac Region
    Apurímac is a region in southern-central Peru. It is bordered on the east by the Cusco Region, on the west by the Ayacucho Region, and on the south by the Arequipa and Ayacucho regions...

    , southwestern Peru.
  • var. Rio Lurin (KK2147), Rio Rimac, Lima, west central Peru.
  • var. tarmensis (KK2148), Tarma
    Tarma
    Santa Ana de la Ribera de Tarma is a city in Junín Region, Perú. Tarma is the capital city of the Province of Tarma, and is also called the Pearl of the Andes. The city is located at around , at an elevation of around 3000 m...

    , Junín
    Junín Region
    Junín is a region in the central highlands and westernmost Amazonia of Peru. Its capital is Huancayo.-Geography:The region has a very heterogeneous topography. The western cordillera located near the border with the Lima Region, has snowy and ice covered peaks. On the east, there are high glacier...

    , west central Peru.
  • var. trujilloensis, Trujillo, La Libertad
    Trujillo, Peru
    Trujillo, in northwestern Peru, is the capital of the La Libertad Region, and the third largest city in Peru. The urban area has 811,979 inhabitants and is an economic hub in northern Peru...

    , northwestern Peru.

External links

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