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Yellow Leaves in Catharanthus
verifiedReviewed by the GreenScout Team
Catharanthus, commonly called vinca or Madagascar periwinkle, is a heat- and drought-tolerant tender annual with glossy foliage and attractive five-petaled flowers in shades of pink, purple, red, or white
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Catharanthus care requirements
These care conditions are most relevant to yellow leaves in Catharanthus. Check each one as a potential cause.
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Light
Full sun (6+ hours daily); tolerates light shade but flowers best in strong sunlight
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Water
Drought-tolerant once established; water when soil surface is dry; reduce watering in winter
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Fertiliser
Light feeding every 4–6 weeks during growing season; excessive fertility reduces flowering
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Symptoms to look for in Catharanthus
- fiber_manual_recordPale green turning yellow
- fiber_manual_recordYellowing starting from lower leaves
- fiber_manual_recordInterveinal yellowing
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Common causes in Catharanthus
- fiber_manual_recordOverwatering
- fiber_manual_recordUnderwatering
- fiber_manual_recordNutrient deficiency
- fiber_manual_recordLow light
- fiber_manual_recordRoot rot
- fiber_manual_recordPests
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How to diagnose yellow leaves in Catharanthus
Check soil moisture first. Wet soil + yellow lower leaves = overwatering. Dry soil = underwatering. Yellowing between veins = nutrient deficiency.
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How to treat yellow leaves in Catharanthus
Adjust watering schedule. Feed with balanced fertiliser. Check for pests.
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Preventing yellow leaves in Catharanthus
Water only when top 2 inches of soil are dry. Feed during growing season. Provide adequate light.