Madagascar periwinkle
Catharanthus roseus
Rosea
About this plant
Catharanthus roseus, commonly known as Madagascar periwinkle, is a popular flowering plant with shiny green leaves and bright, five-petaled flowers that come in shades of pink, white, and red. It is valued for its long blooming period and ability to thrive in warm climates. Traditionally, it has been used in medicine, but it is mainly grown as an ornamental plant in gardens and containers.
Taxonomy
- Genus
- Catharanthus
- Family
- Apocynaceae
- Higher classification
- Gentianales
- Plant type
- Perennial
- Lifespan
- Perennial
Origin & Distribution
- Native region
- Madagascar
- Distribution
- Originally from Madagascar, it is now widely grown in tropical and subtropical regions worldwide as an ornamental plant.
Care
- Light preference
- Full sun
- Suitable locations
- Indoor, Outdoor, Balcony, Greenhouse
- Preferred window facing
- South-facing, West-facing, East-facing
- Watering frequency
- Moderate
- Watering interval
- 3–7 days
- Humidity
- Normal
- Minimum
- 10 °C
- Maximum
- 35 °C
- Optimal
- 18–30 °C
- USDA hardiness zones
- 9–11
- Soil pH
- 6.0–7.5 (slightly acidic to neutral)
- Soil type
- well-draining loam or potting soil mix
Watering. Water regularly but allow the soil to dry out slightly between waterings. Avoid overwatering to prevent root rot.
Fertilizing. Feed the plant with a balanced, water-soluble fertilizer every 4 to 6 weeks during the growing season to encourage healthy growth and abundant flowers.
Catharanthus roseus is a tough plant that grows well in sunny spots and tolerates dry conditions. It needs well-draining soil and regular watering but can survive some neglect. Watch for overwatering, which can cause root problems.
Propagation
- Propagation methods
- Seeds, Cuttings
- Care difficulty
- Easy
Ornamental features
- Flowering
- Yes
- Flowering period
- spring–fall
Glossy green leaves and bright, showy flowers in pink, white, or red that bloom for many months.
Toxicity & Safety
- Toxic to humans
- Mildly toxic
- Toxic to pets
- Mildly toxic
- Weed potential
- Not considered a weed
All parts of the plant are mildly toxic if ingested. Keep away from children and pets to avoid accidental swallowing.
Allergy information
- Allergy risk
- Low
- Allergy triggers
- Sap or latex, Skin contact
- Pollen level
- Low
Catharanthus roseus may cause mild skin irritation in sensitive individuals due to its sap. It is not a common allergen, but people with sensitive skin should handle it with care and wash hands after touching the plant.
Common problems
Overwatering can lead to root rot and fungal diseases. Poor drainage or too much shade may cause weak growth and fewer flowers. Occasionally, pests like aphids or spider mites can appear.
Uses
Grown mainly as an ornamental plant for its attractive flowers and long blooming season. It has traditional medicinal uses but should not be used without expert guidance.
Notes
Prune occasionally to maintain shape and encourage bushier growth. Repot young plants annually if grown indoors. Avoid waterlogging to prevent root rot.