---
title: "Does anyone know what is causing these brown spots??"
description: "Does anyone know what is causing these brown spots??"
url: "https://getplanta.com/community/lKxUkhzRR_aIJD7o1QvtwQ/649b764113736d278d370e1a?language=ja"
community: "Pests, diseases and problems"
author: "Katlyn"
published: "2023-06-27T23:52:33.251Z"
language: "en"
image: "https://images.getplanta.com/v1/resize/55F2qdWvnpu-yQg5zAxN1D6odlBfkEvdHfSuha_AEd8/7a697281eeb44b6a9e04f48b1efe3ec1.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)

# Does anyone know what is causing these brown spots??

_Katlynさんが2023-06-27に投稿しました_

Does anyone know what is causing these brown spots??

![1件中1件目の添付ファイル](https://images.getplanta.com/v1/resize/55F2qdWvnpu-yQg5zAxN1D6odlBfkEvdHfSuha_AEd8/7a697281eeb44b6a9e04f48b1efe3ec1.webp?size=large)

## 12件のコメント

### leahさんが2023-06-28にコメントしました

what plant is this?

#### Katlynさんが2023-06-28に返信しました

It’s called a rattlesnake plant

#### leahさんが2023-06-28に返信しました

might be wrong but i’m pretty sure that falls under calathea, i’ve got one and it’s quite fussy about light, i’d probably just move it away from the window and see how it does

### Plant Lives Matterさんが2023-06-28にコメントしました

I know calathea plants all prefer a high humidity, so it’s possible that’s what the problem is. It could be drying out, so try adding a humidity tray underneath or a humidifier.

### Danikaさんが2023-06-28にコメントしました

Might be sunburn. Indirect light only for calatheas.

#### Katlynさんが2023-06-28に返信しました

I have it in a north facing window so I don’t think it actually gets the greatest indirect light it I’ll try moving it a little further away because I do have it in my window sill

#### Lisetteさんが2023-06-28に返信しました

I don’t think it’s sunburn, this happened to my rattlesnake plant and I’m pretty sure it was from lack of humidity

#### Katlynさんが2023-06-29に返信しました

I have two cups of water next to it but I’ll try to mist it more. Thank you!

#### Claire5904さんが2023-07-02に返信しました

That may be burning from water droplets staying on the leaves after you mist or water. The droplets act like tiny magnifying glasses and can burn perfect round little circles like that. The fact you mist and it’s also in the window made me think this. Mist in the evening after the sun is down or early am so it has enough time to dry before getting sun. I have mine in a west facing window and she does just fine.

### rileighさんが2023-06-28にコメントしました

humidity or maybe the ph of your water

### Danikaさんが2023-06-30にコメントしました

I am assuming you know to only water calatheas with distilled, filtered or rain water, yes?

#### Katlynさんが2023-07-04に返信しました

My striped calatheas I do, but I didn’t think of that for my rattlesnake plant because I wasn’t told to do that but now since I realize they’re in the same class that I need to start doing that

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