Gymnocalycium mihanovichii, also known as the moon cactus, is a small, colorful cactus species native to South America. Its most distinctive feature is its vibrant, often neon-colored top, which is grafted onto a green or grayish-green base cactus, typically from the Hylocereus genus. The top section is typically bright red, pink, yellow, or orange, and the bottom part provides support and nutrients to the grafted top. This hybrid nature of Gymnocalycium mihanovichii makes it a popular ornamental cactus.
Care Tips for Gymnocalycium mihanovichii:
- Light: Requires bright, indirect light. Direct sunlight should be avoided as it can scorch the colorful top.
- Watering: Water deeply but infrequently. Allow the soil to dry out between waterings to prevent root rot. Reduce watering in winter months.
- Soil: Use a well-draining cactus mix or soil designed for succulents.
- Temperature: Prefers temperatures between 18–30°C (65–85°F), with protection from frost in winter.
- Fertilizer: Use a diluted cactus fertilizer during the growing season (spring and summer) to encourage healthy growth.
- Grafting: Since the top part of the cactus is grafted, it should not be removed from the base, as it cannot survive independently without chlorophyll.
- Pests: Watch for common pests like aphids or mealybugs, especially around the graft union.
