---
title: "Good morning! Can someone help me identify this? It’s only on the…"
description: "Good morning! Can someone help me identify this? It’s only on the largest leaf of my Rojo Congo. I can’t see anything moving. TIA"
url: "https://getplanta.com/community/lKxUkhzRR_aIJD7o1QvtwQ/654f9932322cf4703d9a68ef?language=ja"
community: "Pests, diseases and problems"
author: "Cindy Asby"
published: "2023-11-11T15:09:38.088Z"
language: "en"
image: "https://images.getplanta.com/v1/resize/jz8GgIcqfV8d1VINjYxyBpfQx49m-rZXoLa8q6pZI90/11148d3b5399430384681331f6701b1a.webp?size=large"
---

[コミュニティ](https://getplanta.com/community.md?language=ja) / [Pests, diseases and problems](https://getplanta.com/community/lKxUkhzRR_aIJD7o1QvtwQ.md?language=ja)

# Good morning! Can someone help me identify this? It’s only on the…

_Cindy Asbyさんが2023-11-11に投稿しました_

Good morning! Can someone help me identify this? It’s only on the largest leaf of my Rojo Congo. I can’t see anything moving. TIA

![1件中1件目の添付ファイル](https://images.getplanta.com/v1/resize/jz8GgIcqfV8d1VINjYxyBpfQx49m-rZXoLa8q6pZI90/11148d3b5399430384681331f6701b1a.webp?size=large)

## 4件のコメント

### Adaさんが2023-11-11にコメントしました

Looks like fungus to me

### MeasomerPiさんが2023-11-11にコメントしました

It looks bacterial to me. I found the following information online.

Bacterial leaf spot, Erwinia spp.  
Tiny, water-soaked areas develop on the leaves. These areas expand into tan to blackened lesions. When the bacteria move into the petioles, the leaf collapses and often drops. Infection can spread very quickly and affected plants often develop an unpleasant, fishy odor.

Control can be achieved by removing the infected leaves as soon as symptoms appear. Since the bacteria are easily spread through handling and splashing water, care should be taken when handling the plants. It is prudent to destroy severely infected plants since recovery is unlikely. This also helps to eliminate sources of the bacterium and subsequent spread to healthy plants.

#### LynnieB.さんが2023-11-15に返信しました

This is on one of my monstera plants and I didn’t know what it was. Think I should destroy it?

#### MeasomerPiさんが2023-11-15に返信しました

If it were mine, I would try quarantining the plant and see if it could get it under control. If it continues to decline, I would destroy it to keep the infection out of the rest of my collection.

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