petal blight phalaenopsis cattleya on Orchid
Quick answer
If your Orchid has petal blight phalaenopsis cattleya, the most likely cause is: Phalaenopsis and Cattleya orchids are susceptible to petal blight in early autumn, showing dark brown/black spots with pink margins on petals. Warm, humid conditions promote this fungal disease.
Start here:
- 1. 1. Remove infected flowers immediately to prevent spore spread
- 2. 2. Reduce night-time humidity levels
Why Orchid gets petal blight phalaenopsis cattleya
Phalaenopsis spp.
Phalaenopsis and Cattleya orchids are susceptible to petal blight in early autumn, showing dark brown/black spots with pink margins on petals. Warm, humid conditions promote this fungal disease.
How to reverse petal blight phalaenopsis cattleya on Orchid
- 1
1. Remove infected flowers immediately to prevent spore spread
- 2
2. Reduce night-time humidity levels
- 3
3. Add supplementary warmth in autumn for Phalaenopsis and Cattleya
- 4
4. Improve air circulation around plants
- 5
5. Avoid misting flowers directly
- 6
6. Treat remaining plants with fungicide preventive spray
Keep petal blight phalaenopsis cattleya off this Orchid
Maintain lower night humidity in autumn for these orchid types. Provide additional warmth in cool situations to prevent conditions that favor petal blight.