Cactaceae
Argentine White Torch Cactus (Soehrensia candicans)
Soehrensia candicans
Low-maintenance species. Requires full sun, infrequent watering (every 14 days in summer, much less in winter), and fast-draining soil. Cold-hardy to -6°C.
Every 14 days
Direct sun
-6° - 35°C
20% - 50%
Categories
What is Argentine White Torch Cactus?
Argentine White Torch Cactus (Soehrensia candicans) is a easy-care plant from the Cactaceae family. The Argentine White Torch Cactus (Soehrensia candicans) is a columnar cactus native to northern Argentina, renowned for its spectacular large white fragrant flowers that bloom at night. It forms sprawling clumps up to 3 m (10 ft) wide, with individual stems reaching 60 cm (24 in) tall. Hardy, drough...
Argentine White Torch Cactus grows up to 60cm, with spread of 300cm, watering every 14 days, -6°C – 35°C, 20–50% humidity. It is suitable for indoor environments and safe for pets.
Unlike many tropical plants, Argentine White Torch Cactus tolerates watering mistakes. Best for beginners. Unlike many popular species, Argentine White Torch Cactus is safe to keep around pets. Without adequate drainage, root rot can develop within 28 days.
How to Care for Argentine White Torch Cactus?
TLDR: Argentine White Torch Cactus needs Direct sun, watering every 14 days, and temperatures between -6-35°C with 20-50% humidity.
How Often Should You Water Argentine White Torch Cactus?
Water thoroughly and allow the soil to dry out completely before watering again. In winter, reduce to once a month or less. Never let water pool at the base.
How Much Light Does Argentine White Torch Cactus Need?
Requires full sun — at least 6 hours of direct sunlight daily. When grown indoors, place near the sunniest available window.
What Is the Best Soil for Argentine White Torch Cactus?
Use a fast-draining cactus and succulent mix. Add coarse sand or perlite (30-40%) to prevent waterlogging and root rot.
What Pot Should You Use for Argentine White Torch Cactus?
Terracotta or ceramic pot with drainage holes. Avoid plastic pots that retain moisture.
Care Schedule
Fertilize
Every 90 days
What Is Argentine White Torch Cactus and Where Does It Come From?
The Argentine White Torch Cactus (Soehrensia candicans) is a columnar cactus native to northern Argentina, renowned for its spectacular large white fragrant flowers that bloom at night. It forms sprawling clumps up to 3 m (10 ft) wide, with individual stems reaching 60 cm (24 in) tall. Hardy, drought-tolerant, and cold-resistant to -6°C (21°F), it thrives in xeriscapes and rock gardens.
How to Propagate Argentine White Torch Cactus?
Seed Propagation
Keep the substrate slightly moist during germination. Higher temperatures improve germination rates.
- 1 Collect seeds from ripe fruits and dry completely
- 2 Sow in sterile cactus potting mix
- 3 Keep in indirect light at 20-25°C (68-77°F)
- 4 Transplant seedlings when they reach 2-3 cm
Materials needed:
Offset Division
Allow the base to callus completely before planting to prevent rot.
- 1 Identify offsets at least 10 cm long
- 2 Cut with a sterilized knife
- 3 Allow cut to callus for 3-5 days in a dry, shaded spot
- 4 Plant in dry cactus mix and wait 1 week before watering
Materials needed:
How Big Does Argentine White Torch Cactus Grow?
TLDR: Argentine White Torch Cactus can reach up to 60cm tall with Medium growth rate.
Max height
60cm
Spread
3.0m
Growth rate
Medium
Foliage
Evergreen
Warning: Toxic Plant
This plant can be toxic if ingested. Keep out of reach of:
Plant Uses
Ornamental
Great for decoration
Is your plant showing symptoms?
Click on the symptom to discover possible causes:
What Diseases Commonly Affect Argentine White Torch Cactus?
TLDR: Argentine White Torch Cactus is susceptible to 4 known diseases. Monitor regularly for early detection.
Root Rot
Root rot is a serious fungal disease that affects the root system of plants, causing them to decay and die. It is primarily caused by overwatering, poor drainage, or soil-borne fungi such as Pythium, Phytophthora, Rhizoctonia, and Fusarium. The disease thrives in waterlogged conditions where roots are deprived of oxygen, making them susceptible to fungal infection.
Spider Mites
Spider mites are tiny arachnids (less than 1/20 inch long) related to spiders and ticks that feed on plant sap. They thrive in hot, dry conditions and can cause significant damage to ornamental and vegetable plants. During severe infestations, crop losses can reach 14% or higher as these pests disrupt vital plant processes including photosynthesis, carbon dioxide absorption, and transpiration.
Mealybugs
Mealybugs are small, soft-bodied insects covered with a white, waxy, cottony material. They are common pests of houseplants and outdoor plants in mild climates. These sap-sucking insects feed on plant tissue, causing damage, stunted growth, and can lead to plant death if left untreated. They produce sticky honeydew which attracts sooty mold.
Anthracnose
Anthracnose is a fungal disease caused by fungi in the genus Colletotrichum that affects many plants, including vegetables, fruits, and trees. The disease thrives in cool, wet conditions, causing dark, sunken lesions on leaves, stems, flowers, and fruits.
Meaning & Symbolism
A symbol of resilience and nocturnal beauty in the Argentine desert landscape.
Fun Facts
The flowers can reach up to 19 cm (7.5 in) across and release a powerful fragrance only at night
A single plant can spread into clumps more than 3 m (10 ft) wide over the years
Native to the Argentine provinces of Mendoza, San Juan, and Córdoba
The name "candicans" comes from Latin meaning "shining white", referring to its brilliant flowers
Frequently asked questions
How often should I water the Argentine White Torch Cactus?
Is the Argentine White Torch Cactus toxic?
How do I get my Argentine White Torch Cactus to bloom?
Can the Argentine White Torch Cactus be grown in a pot?
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