Introducing the San Pedro cactus, also known as Echinopsis pachanoi (Syn. Trichocereus pachanoi), which is among the superstars of the cactus world. This fast-growing columnar cactus is also known as the Wachuma and Huachuma. 

Standing tall and proud, this magnificent San Pedro cactus columnar beauty can reach heights of up to 20 feet and spread its branches wide, up to six feet! With stems that range from vibrant green to mesmerizing blue-green shades, San Pedro is a true showstopper in any landscape. As your San Pedro cactus plant matures, its colors deepen and intensify, adding even more charm to its already captivating presence.  

When the San Pedro cactus flowers bloom, they emit a sweet fragrance that attracts pollinators like bees and butterflies.

The flowers are usually large and trumpet-shaped and come in various colors, including white, cream, and yellow. The petals have a delicate texture and often have a waxy appearance.

The fragrant flowers usually open during the day and close at night. They have a short blooming period, typically lasting for a day or two.

During the blooming season, which usually occurs in late spring or early summer, multiple flowers can bloom at once, creating a captivating sight.

The San Pedro cactus seeds and cuttings of the mature plants are the easiest ways to propagate. They also have Pitahaya red San Pedro cactus fruits. San Pedro's connection to ancient shamanic ceremonies in the Andes Mountains is what makes it truly unique. 

Watering Needs 

San Pedro cactus is a drought-tolerant plant that can survive in dry conditions for long periods of time. However, it still needs regular watering to stay healthy. Generally, the San Pedro needs to be watered once every two weeks. During the summer months, when temperatures are high and the plant is actively growing, it may need to be watered more frequently.  

When watering your Echinopsis pachanoi, be sure to soak the soil thoroughly and allow it to drain completely. To prevent root rot and other issues, avoid overwatering. The leaves may become dry and brittle, and the cactus may stop growing if it is underwater. Over time, the San Pedro cacti may start to lose their shape and become misshapen.  

In addition to these physical symptoms, underwatering can also make the cactus more susceptible to pests and diseases. To keep your San Pedro cactus healthy and thriving, it is important to water it regularly and provide it with the right growing conditions. 

Light Requirements 

When grown indoors, your San Pedro cactus should be placed in a bright, sunny location where it can receive at least six hours of direct sunlight each day.

For outdoor cultivation, the San Pedro cactus requires a lot of sunlight to grow and thrive. In its natural habitat, this cactus is exposed to direct sunlight for 4-6 hours each day.  If you live in an area with a lot of cloud cover or limited sunlight, you may need to supplement your cactus's light with artificial grow lights. 

So, let's give your San Pedro cactus plant what it deserves—just the right amount of light to bloom into the ultimate showstopper! 

Optimal Soil & Fertilizer Needs 

Use well-drained soil that is designed specifically for your Echinopsis pachanoi cactus. These specialty soil mixes have been precisely developed to imitate well-draining desert soils. Commercial cactus soil is affordable and available online or at Home Depot.

Planet Desert specializes in cacti and has a specialty cactus potting mix that contains 5 natural substrates and organic mycorrhizae to promote the development of a strong root system that helps your San Pedro cactus thrive. 

When it comes to fertilizing your San Pedro cactus plant, it only needs a small amount of fertilizer applied once a year in the spring. Cacti prefer fertilizer with lower doses of NPK, with a maximum ratio of 5-10-5 that is higher in phosphorus than nitrogen. Remember, overfertilization can lead to root rot or even the death of the plant, so be cautious! 

Hardiness Zones & More 

San Pedro cactus is a hardy plant that can grow in a variety of different climates. It is native to the Andes Mountains, where it can be found growing at high altitudes in a range of temperatures. In the United States, San Pedro cactus is typically grown in warm, dry climates such as those found in the southwestern states. 

When growing indoors, the San Pedro cactus prefers a warm and dry environment. It thrives in temperatures ranging from 55°F to 75°F. Aim for a humidity level of around 40% to 50% to create an ideal indoor environment for your San Pedro cactus.

For outdoor cultivation, this cactus is hardy in USDA zones 8–11, which means that it can tolerate temperatures as low as 20 degrees Fahrenheit. If you live in an area with extreme temperatures, you may need to take extra precautions to ensure that your San Pedro cactus Echinopsis pachanoi, stays healthy. 

In addition to its hardiness zone, it is also important to consider the humidity requirements of the San Pedro cactus. This cactus is adapted to dry, arid environments and does not require a lot of humidity to grow. In fact, high levels of humidity can be detrimental to the health of the plant, as they can promote the growth of mold and fungal diseases. 

Final Thoughts

Overall, the San Pedro cactus (Echinopsis pachanoi) is a remarkable plant with unique features. It is characterized by its tall, columnar shape and beautiful white or yellow flowers. The cactus can grow to impressive heights, reaching up to 20 feet in optimal conditions. Its spines are relatively short and are arranged in clusters along the ridges of the cactus. The San Pedro cactus is a low-maintenance plant that thrives in well-draining potting soil and enjoys ample sunlight. It prefers a dry environment and can tolerate drought, so it should be watered sparingly, allowing the soil to dry out between waterings.

Don't miss out on this opportunity to add something truly exceptional to your garden. Buy San Pedro cactus for sale today to enhance your collection!