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Root Rot 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 root rot in Catharanthus. Check each one as a potential cause.
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Water
Drought-tolerant once established; water when soil surface is dry; reduce watering in winter
compost
Soil
Well-draining soil; prefers slightly sandy or lean soil; avoid waterlogged conditions
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Humidity
Low to moderate; tolerates dry air well
symptoms
Symptoms to look for in Catharanthus
- fiber_manual_recordBrown, mushy roots
- fiber_manual_recordYellowing leaves
- fiber_manual_recordWilting despite moist soil
- fiber_manual_recordFoul smell from soil
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Common causes in Catharanthus
- fiber_manual_recordOverwatering
- fiber_manual_recordPoor drainage
- fiber_manual_recordFungal pathogens
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How to diagnose root rot in Catharanthus
Remove plant from pot. Healthy roots are white/tan and firm. Rotted roots are brown/black and mushy.
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How to treat root rot in Catharanthus
Trim all rotted roots with sterile scissors. Treat with hydrogen peroxide solution. Repot in fresh, well-draining soil.
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Preventing root rot in Catharanthus
Always use pots with drainage holes. Allow soil to partially dry between waterings. Use well-draining compost.