Pilosocereus Calcisaxicolus: A Rare Cactus Species Found in Brazil

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If you’re looking for a unique addition to your indoor or outdoor garden, Pilosocereus Calcisaxicolus, also known as the Blue Torch cactus, might be the perfect choice. This slow-growing cactus is native to Brazil and can reach heights of 12-15 feet. Cactus enthusiasts love it for its blue-green stems and golden spines.

To ensure your Pilosocereus Calcisaxicolus thrives, provide it with bright, indirect light and well-draining soil. Overwatering can lead to root rot, so be sure to avoid this. With proper care and maintenance, you can enjoy this unique cactus for years to come.

Key Takeaways

  • Pilosocereus Calcisaxicolus is a slow-growing cactus that requires bright, indirect light and well-draining soil to thrive.
  • Proper care and maintenance, including avoiding overwatering, can help you enjoy this unique cactus for years to come.
  • You can propagate Pilosocereus Calcisaxicolus to create more cacti to enjoy in your indoor or outdoor garden.
Pilosocereus Calcisaxicolus

Pilosocereus Calcisaxicolus

If you’re looking for a unique and exotic cactus to add to your collection, Pilosocereus calcisaxicolus is a great option. This shrubby or columnar cactus is native to Brazil and can grow up to 12-15 feet in height and 6-8 feet in width. The stems are blue-green in color, and the areoles are covered with golden spines.

To ensure that your Pilosocereus calcisaxicolus thrives, it’s important to provide it with the right growing conditions. This slow-growing cactus requires bright, indirect light and well-draining soil. Additionally, be sure to water it sparingly, as overwatering can lead to root rot.

If you want to propagate your Pilosocereus calcisaxicolus, simply take a cutting that is at least 6 inches long and allow it to dry for a few days before planting it in well-draining soil. This cactus is a popular ornamental plant that is often used in landscaping and as a houseplant. It is also used in traditional medicine to treat fever, inflammation, and pain.

While Pilosocereus calcisaxicolus is a low-maintenance cactus, it’s important to watch out for pests such as mealybugs and spider mites, which can damage the cactus if left untreated.

Understanding Pilosocereus Calcisaxicolus

Botanical Description

Pilosocereus calcisaxicolus is a tree-like cactus that can grow up to 10 meters tall. The stem of the cactus is cylindrical and can reach a diameter of up to 10 cm. The stem is covered with golden spines that can grow up to 3 cm long.

The spines are arranged in clusters on the areoles, which are small, raised bumps on the stem. The flowers of Pilosocereus calcisaxicolus are tubular and grow up to 5 cm long.

The flowers are white or pinkish-white in color and bloom in the summer months. The fruits of the cactus are fleshy and can grow up to 4 cm long.

Habitat and Distribution

Pilosocereus calcisaxicolus is native to Brazil and is found growing on limestone hills in the Caatinga biome. The cactus grows in rocky areas and is well adapted to the harsh conditions of the region.

Due to its limited distribution, Pilosocereus calcisaxicolus is considered a vulnerable species. It is threatened by habitat loss and illegal collection for ornamental purposes.

Care and Maintenance

Proper care and maintenance are crucial to keep your Pilosocereus Calcisaxicolus healthy and thriving.

This cactus requires minimal care, but there are some common challenges that you should watch out for. Here are some tips to help you care for your Pilosocereus Calcisaxicolus:


Pilosocereus Calcisaxicolus requires plenty of bright, direct sunlight to thrive. Make sure to place your cactus in a location where it will receive at least 6 hours of direct sunlight per day.


Water your Pilosocereus Calcisaxicolus sparingly, allowing the soil to dry out completely between waterings. Overwatering can lead to root rot, which can be fatal to the cactus.


Pilosocereus Calcisaxicolus prefers a well-draining soil that is slightly acidic. A mixture of sand, perlite, and limestone can provide the ideal growing conditions for this cactus.


Feed your Pilosocereus Calcisaxicolus with a balanced cactus fertilizer during the growing season (spring and summer). Avoid fertilizing during the winter months when the cactus is dormant.


Pilosocereus Calcisaxicolus rarely requires pruning. However, if your cactus becomes too tall or begins to lean, you can trim it back to promote a more compact, upright growth habit.

Common Challenges

While Pilosocereus Calcisaxicolus is a hardy cactus, there are some common challenges you may encounter when cultivating it:

  • Overwatering: This cactus is susceptible to root rot if it is overwatered. Make sure to allow the soil to dry out completely before watering again.
  • Pests: Mealybugs and spider mites can be a problem for Pilosocereus Calcisaxicolus. Keep an eye out for any signs of infestation and treat with insecticidal soap if necessary.
  • Sunburn: While this cactus loves direct sunlight, it can also get sunburned if it is exposed to too much intense sunlight. If you notice any signs of sunburn, move the cactus to a more shaded area.

By following these simple care and maintenance tips, you can help your Pilosocereus Calcisaxicolus thrive and flourish for years to come.

How to Propagate Pilosocereus Calcisaxicolus?

Propagating Pilosocereus Calcisaxicolus is relatively easy and can be done through stem cuttings. Here are the steps you need to follow:

  1. First, select a healthy stem that is at least 6 inches long. It’s essential to choose a stem that is not damaged or diseased.
  2. Using a clean, sharp knife, make a clean cut at a 45-degree angle to the stem. Make sure the cut is clean and not jagged, as this can cause the cutting to rot.
  3. Allow the cutting to dry for a few days, so the cut end forms a callus. This will help prevent rot when you plant the cutting.
  4. Once the cutting has formed a callus, plant it in a well-draining soil mix. You can use a mix of perlite, sand, and limestone to create a soil that is dry and well-draining.
  5. Water the soil lightly, and place the cutting in a bright, but indirect light. Avoid direct sunlight as this can scorch the cutting.
  6. Keep the soil moist, but not wet. Overwatering can cause the cutting to rot, so be careful not to water it too much.
  7. After a few weeks, you should start to see new growth on the cutting. This is a sign that the cutting has rooted, and you can start to treat it like a mature plant.

Remember to be patient when propagating Pilosocereus Calcisaxicolus. It can take some time for the cutting to root and start to grow. But with proper care and attention, you should be able to grow a healthy new plant from a stem cutting.

Can Pilosocereus Calcisaxicolus be Grown Indoors?

If you are looking to grow Pilosocereus Calcisaxicolus indoors, make sure to provide it with adequate light, warm temperatures, and proper watering. Pilosocereus Calcisaxicolus requires bright, indirect light and at least six hours of direct sunlight per day.

You can place your plant near a south-facing window or under grow lights to provide it with the necessary light. Keep your plant away from cold drafts, air conditioning, and heating vents to maintain warm temperatures between 50-80°F (10-27°C).

Water your Pilosocereus Calcisaxicolus sparingly, allowing the soil to dry out completely between waterings. Overwatering can lead to root rot, so be sure to limit water even more during the winter months when plant growth slows.

With these growing conditions in mind, you can successfully grow Pilosocereus Calcisaxicolus indoors and enjoy this unique cactus species in your home.

Conservation Status

Pilosocereus calcisaxicolus is an endangered species of cactus that is native to Brazil. Due to its limited distribution and habitat loss, conservation efforts are necessary to protect this species from extinction.

The IUCN Red List of Threatened Species has classified Pilosocereus calcisaxicolus as “Endangered” due to its restricted range and ongoing habitat loss. The species is also listed under Appendix II of the Convention on International Trade in Endangered Species of Wild Fauna and Flora (CITES).

To protect Pilosocereus calcisaxicolus and other endangered cacti species, various conservation measures have been implemented. The Brazilian government has established protected areas, such as the Serra do Rola Moça State Park, to conserve the natural habitat of Pilosocereus calcisaxicolus.

Additionally, the Cactus Conservation Institute, a non-profit organization, works to conserve endangered cacti species by promoting research, education, and habitat restoration. The Global Cactus Assessment, a joint initiative by the IUCN and other organizations, aims to assess the conservation status of all cactus species and identify conservation priorities.

Overall, the conservation status of Pilosocereus calcisaxicolus is a cause for concern, and concerted efforts are necessary to protect this species and its habitat.

By supporting conservation initiatives and promoting awareness of the importance of cactus conservation, we can help ensure the survival of this unique and valuable species.

Frequently Asked Questions (FAQs)

What are some common species of Pilosocereus?

Pilosocereus is a genus of cacti that includes many different species. Some of the most common species of Pilosocereus include Pilosocereus pachycladus, Pilosocereus azureus, and Pilosocereus magnificus. These cacti are known for their tall, columnar shapes and their ability to grow in a variety of conditions.

How does Pilosocereus calcisaxicolus differ from Pilosocereus pachycladus and Pilosocereus azureus?

Pilosocereus calcisaxicolus, also known as the blue torch cactus, is a shrubby or columnar plant that looks like a miniature blue saguaro. It differs from Pilosocereus pachycladus in that it has more pronounced ribs and spines, and from Pilosocereus azureus in that it has a bluer coloration and more pronounced spines.

What is the care routine for Pilosocereus calcisaxicolus?

The care routine for Pilosocereus calcisaxicolus is relatively simple. This cactus prefers bright, indirect light and well-draining soil. Water it sparingly, allowing the soil to dry out completely between waterings. Fertilize it once a month during the growing season with a cactus-specific fertilizer.

Is Pilosocereus calcisaxicolus toxic to pets?

While Pilosocereus calcisaxicolus is not known to be toxic to pets, it is always best to keep all plants out of reach of curious animals.

What is the growth rate of the blue torch cactus?

The growth rate of the blue torch cactus is slow. It can take several years for this cactus to reach its full height of 12-15 feet.

What are the ideal growing conditions for a blue torch cactus?

The ideal growing conditions for a blue torch cactus include bright, indirect light, well-draining soil, and occasional fertilization. This cactus is also tolerant of drought and can withstand periods of neglect. However, it is important to remember that it is still a living plant and requires some care to thrive.


In summary, Pilosocereus calcisaxicolus is a rare and endangered cactus species native to Brazil that can add an exotic touch to your collection. This cactus species is known for its distinctive appearance, with thick, woolly hairs covering its stems and bright red flowers that bloom in the summer.

To ensure it thrives, Pilosocereus calcisaxicolus requires well-draining soil, plenty of sunlight, and occasional watering. If you’re interested in adding this cactus species to your collection, be sure to purchase from reputable sources that practice ethical and sustainable harvesting practices.

With its unique appearance and easy care requirements, Pilosocereus calcisaxicolus is a fascinating and beautiful cactus species that is well worth considering for any cactus enthusiast.

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