To keep a pencil cactus healthy, provide consistent bright light and avoid frequent watering. Prune occasionally to control its size and shape, especially if it grows too tall or uneven. Repotting every few years helps refresh the soil and gives roots more space. Keep the plant in a warm environment, away from cold drafts. With minimal care and attention to its basic needs, the pencil cactus can thrive for years and remain a unique addition to your plant collection. know more about pencil cactus care