How often should I water my Madagascar periwinkle?

The watering frequency for Madagascar periwinkle depends on several factors including season, pot size, and environmental conditions. Generally, Madagascar periwinkle should be watered every 7–10 days, allowing soil to dry slightly between waterings. During the growing season (spring and summer), you may need to water more frequently, while in dormant periods (fall and winter), reduce watering. Always check the soil moisture before watering - stick your finger about 2 inches into the soil. If it feels dry, it's time to water. Overwatering is one of the most common causes of plant death, so it's better to err on the side of underwatering. Signs of overwatering include yellowing leaves, soft stems, and a musty smell from the soil. Signs of underwatering include drooping leaves, crispy leaf edges, and dry, pulling-away soil.