Maintaining a Fairy Castle Cactus is relatively straightforward. Here are some essential care tips:

1. Light: Place the cactus in bright, indirect light. It thrives in sunlight but can tolerate some shade.
2. Watering: Allow the soil to dry out between waterings. Overwatering can lead to root rot, so it’s better to underwater than overwater.
3. Soil: Use well-draining cactus or succulent soil to prevent waterlogging.
4. Temperature: Keep the cactus in a warm environment. It prefers temperatures between 70-100°F (21-38°C) during the day and not below 50°F (10°C) at night.
5. Humidity: Fairy Castle Cactus is adapted to arid conditions, so it doesn’t require high humidity. Normal indoor humidity levels are usually sufficient.
6. Pruning: Trim or remove any dead or damaged stems with clean, sharp scissors or pruning shears.
7. Fertilization: Feed the cactus with a diluted, balanced liquid fertilizer during the growing season (spring and summer) every 4-6 weeks.
8. Handling: Be cautious when handling the cactus due to its sharp spines. Use gloves or a cloth when necessary.

By following these guidelines, you can keep your Fairy Castle Cactus healthy and thriving.