Problem Diagnosis • 89% avg confidence
Bacterial Infection
Our analysis of 2 verified rescue cases across 2 plant species shows exactly what causes bacterial infection and the most effective fixes.
Quick Summary
Bacterial leaf spot on pothos caused by Xanthomonas campestris or Pseudomonas species introduced through contaminated water, infected propagation material, or contact with infected plants. Bacteria enter through stomata or wounds and multiply in intercellular spaces, producing water-soaked lesions that may ooze bacterial exudate under humid conditions.
Most Effective Solutions
- 1 Sterilize pruners with 70% isopropyl alcohol before and after each cut to prevent spreading bacteria between plants
- 2 Remove all affected leaves at the base by cutting the petiole close to the stem; dispose of infected tissue in sealed bag away from plants
- 3 Apply copper-based bactericide (copper sulfate or copper hydroxide) following label directions for houseplants; repeat every 7-10 days
Affected Plants
2 speciesFrequently Asked Questions
What causes bacterial infection?
Bacterial leaf spot on pothos caused by Xanthomonas campestris or Pseudomonas species introduced through contaminated water, infected propagation material, or contact with infected plants. Bacteria enter through stomata or wounds and multiply in intercellular spaces, producing water-soaked lesions that may ooze bacterial exudate under humid conditions.
How do I fix it?
- Sterilize pruners with 70% isopropyl alcohol before and after each cut to prevent spreading bacteria between plants
- Remove all affected leaves at the base by cutting the petiole close to the stem; dispose of infected tissue in sealed bag away from plants
- Apply copper-based bactericide (copper sulfate or copper hydroxide) following label directions for houseplants; repeat every 7-10 days
Which plants are most affected?
pothos, african violet
Can it be prevented?
Quarantine all new plants for 2-4 weeks with daily visual inspection before introducing to collection. Use filtered or distilled water to minimize bacterial introduction. Avoid overhead watering or misting that wets foliage; bottom-water instead. Sterilize propagation tools with 70% isopropyl alcohol before and after each cut.