---
title: "Anyone know what the brown spots on this monstera are?"
description: "Anyone know what the brown spots on this monstera are?"
url: "https://getplanta.com/community/lKxUkhzRR_aIJD7o1QvtwQ/NQqh61aCjsPLSdbXM1Lo4v?language=ja"
community: "Pests, diseases and problems"
author: "Brit"
published: "2025-05-31T14:24:59.825871Z"
language: "en"
image: "https://images.getplanta.com/v1/resize/zDDgUsBRFc2Vm5AYdAItAmpBoNNOEQTbhI_shK9vxtk/DERdCYRGQLW_p7PyHaiygA.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)

# Anyone know what the brown spots on this monstera are?

_Britさんが2025-05-31に投稿しました_

Anyone know what the brown spots on this monstera are?

![1件中1件目の添付ファイル](https://images.getplanta.com/v1/resize/zDDgUsBRFc2Vm5AYdAItAmpBoNNOEQTbhI_shK9vxtk/DERdCYRGQLW_p7PyHaiygA.webp?size=large)

## 5件のコメント

### Oksana 🥎🍦🌱さんが2025-05-31にコメントしました

Is it just on one leaf?

#### Britさんが2025-06-02に返信しました

No it’s on lots of them 😩

### fueyさんが2025-05-31にコメントしました

This looks more fungal to me, but you should chop off the affected leaf(ves) and spray the rest with something like neem oil or a fungicide suitable for tropical/indoor plants.  
Check your other plants for similar symptoms as well, especially if they’re nearby this one.

### Matildaさんが2025-05-31にコメントしました

Could be rust fungus? You can treat with fungicide but the best thing to do is just get rid of that leaf now before it gets too bad - it will spread from leaf to leaf.

I had my monstera outside last summer and rust fungus absolutely ruined it, I lost 80% of the leaves

### Sunnyさんが2025-05-31にコメントしました

Fungal rust can quickly spread. Fortunately, it only affects my oxalis. It dies back quickly. But, the leaves don’t recover. Use a commercial fungicide. I minimize fungicide use because my plants are outside and I try to reduce the chemicals I spray to impact less on the critters that keep my plants healthy. I would drench everything if my plants are inside.

![1件中1件目の添付ファイル](https://images.getplanta.com/v1/resize/wefqOljjhEOiS9LRzOB1-QhxkVJiB4A5DGumXhnNrhs/TH53F88kR0i5Lt4_Pm8k6A.webp?size=large)

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