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PlantSnap
Plant Care
Blue candle cactus
(Myrtillocactus schenckii)
Also Known As
Blue candle cactus, Blue myrtle cactus, Myrtle cactus, Myrtillocactus, Cactus de los azulejos
About This Plant
Myrtillocactus schenckii is a slow-growing cactus species that can reach up to 3 meters (9.8 feet) in height and 1 meter (3.3 feet) in width. It has a columnar shape and blue-green stems that can reach up to 10 cm (3.9 inches) in diameter. The stems have 5 to 9 ribs with areoles that produce spines and hairs. It produces small pink or white flowers that bloom in the summer and are followed by edible red or purple fruits.
Plant Care Instructions
Outdoor Size Range
Up to 3 meters (9.8 feet) in height and 1 meter (3.3 feet) in width
Light Requirements
Myrtillocactus schenckii prefers full sun to partial shade. It requires at least 6 hours of direct sunlight per day.
Humidity Needs
Myrtillocactus schenckii prefers low humidity levels and can tolerate dry air.
Fertilizing Schedule
Fertilize Myrtillocactus schenckii once a month during the growing season with a cactus-specific fertilizer. Do not fertilize during the winter months.
Pruning Guidelines
Prune Myrtillocactus schenckii to remove any damaged or diseased stems. You can also prune it to control its size and shape.
Common Pests and Diseases
Common pests for Myrtillocactus schenckii include mealybugs, spider mites, and scale insects. It may also be susceptible to fungal diseases.
Indoor Size Range
N/A
Watering Schedule
This cactus species is drought-tolerant and requires infrequent watering. Water it deeply and then allow the soil to dry out completely before watering again. During the winter months, reduce watering to once a month.
Temperature Range
This cactus species can tolerate a wide range of temperatures, from 50°F (10°C) to 100°F (38°C). However, it prefers temperatures between 70°F (21°C) and 90°F (32°C). Protect it from frost and freezing temperatures.
Growing Season
Myrtillocactus schenckii grows actively during the spring and summer months.
Growing Difficulty Level
Myrtillocactus schenckii is considered an easy plant to grow as it is drought-tolerant and can tolerate a wide range of temperatures. However, it requires bright light and may be susceptible to pests if not properly cared for.
USDA Hardiness Zones
Myrtillocactus schenckii is hardy in USDA zones 9b to 11.
Did You Know?
The edible fruits produced by Myrtillocactus schenckii are often used to make jams and jellies in its native range in Mexico.
