Moon Orchid with Bacterial Canker? Rare but Treatable
Phalaenopsis amabilis
Serious bacterial disease affecting stone fruits and tomatoes caused by Pseudomonas syringae or Clavibacter michiganensis. Creates sunken lesions that ooze sap.
ð Symptoms
- âĒ Sunken water-soaked lesions
- âĒ Dark cankers with raised edges
- âĒ Amber sap oozing
- âĒ Branch dieback
- âĒ Brown vascular streaks
â Possible Causes
- â Pseudomonas syringae bacteria
- â Contaminated tools
- â Rain splash
- â Cool wet weather
ð Treatment
Quick Fixes
Emergency pruning
Remove all infected branches immediately
Copper application
Heavy copper spray coverage
Organic Treatment
Prune infected areas
Cut 15cm below visible infection
Apply copper spray
Spray entire plant with copper hydroxide
Remove debris
Clean all fallen material
ðĄïļ Prevention
- â Sterilize pruning tools
- â Prune in dry weather
- â Remove infected debris
- â Improve air circulation
ðą Care Guide: Moon Orchid
ð§ How to Water
Water thoroughly when the potting medium is nearly dry, typically every 7-10 days. Use room temperature water and avoid letting the plant sit in standing water. Reduce watering in winter.
âïļ Lighting
Place in bright, indirect light - an east or west-facing window is ideal. Avoid direct sunlight which can burn the leaves. In winter, supplemental artificial light can encourage blooming.
ðŠī Ideal Soil
Use a well-draining orchid mix consisting of bark chips, perlite, and sphagnum moss. The pH should be slightly acidic (5.5-6.5). Never use regular potting soil as it retains too much moisture.