Bacterial Infection on pothos — Fix & Prevention

What's Happening

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 to Fix It

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
4
Isolate infected plants immediately and maintain strict quarantine until 3 weeks after symptoms disappear
5
Avoid misting or overhead watering; switch to bottom-watering to keep foliage dry and prevent bacterial spread

How to Prevent It

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.

Same Problem on Other Plants

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Frequently Asked Questions

What causes bacterial infection on my plant?

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 en...

How do I fix bacterial infection?

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.

How do I prevent bacterial infection from happening again?

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 mi...