Onghwan Senilis

Cephalocereus senilis

Cephalocereus senilis, commonly known as the "Old Man Cactus," is beloved for its unique appearance. Below are the growth characteristics, propagation methods, cultivation methods, garden uses, and important pests and control methods for Cephalocereus senilis.

Growth Characteristics
- Habitat: Native to the alpine regions of Mexico.
- Appearance: Long white hairs cover the cactus, resembling an old man's hair. These hairs serve to protect it from strong sunlight and conserve moisture.
- Growth Rate: It grows relatively slowly.
- Size: When mature, it can grow up to 6–15 meters, but it remains smaller indoors.

Propagation Methods
- Seeds: Propagation is possible from seeds. It requires warm temperatures and bright light.
- Cuttings: Although not commonly used, it is possible. Dry the cut section and plant it in dry soil. Cultivation Methods
- Sunlight: It prefers bright sunlight, but it is best to avoid direct sunlight during the summer.
- Watering: It is best to water only after the soil surface has completely dried. Avoid overwatering.
- Temperature: It thrives indoors at 18–24°C. Maintain a temperature of 10–15°C during the winter.
- Soil: Use well-draining soil specifically designed for cacti.
- Fertilizer: Apply cactus-specific fertilizer every 4–6 weeks during the growing season (spring to autumn).

Garden Use
- Indoors, it is suitable for ornamental purposes when planted in pots.
- Outdoors, it can be used as an ornamental plant in dry climate gardens.

Important Pests and Control Methods
- Diseases: Root rot can occur due to overwatering. Ensure good drainage and maintain ventilation.
- Pests: Pests such as scale insects may occur. If pests are found, wipe them off with an alcohol-soaked cotton swab or carefully apply a pest control agent.
- Regularly inspect plants for prevention, and take immediate action if a problem arises.

Plant Family	Cactus and
Height	6~15m
Colors	Yellow, orange, purple, red, pink
Bloom Period	March to November
Water Needs	Bad
Exposure	Sunny
Freezing Resistance	-5°C

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