---
title: "Help with a diagnosis for my thai con please. I use my own soil mix…"
description: "Help with a diagnosis for my thai con please. I use my own soil mix in all my plants and a water meter so I dont think I’ve been overwatering. she gets regular…"
url: "https://getplanta.com/community/lKxUkhzRR_aIJD7o1QvtwQ/A6vtH2UlTTWCiFK9rL43rK?language=ko"
community: "Pests, diseases and problems"
author: "Megan"
published: "2024-12-19T04:44:36.022143Z"
language: "en"
image: "https://images.getplanta.com/v1/resize/6nDUT5Dy0iJxQC4pBS0u73NZLBS9mF8NY5a6GZPia3A/7pwow2I9TACULZ1DLsbRHw.webp?size=large"
---

[커뮤니티](https://getplanta.com/community.md?language=ko) / [Pests, diseases and problems](https://getplanta.com/community/lKxUkhzRR_aIJD7o1QvtwQ.md?language=ko)

# Help with a diagnosis for my thai con please. I use my own soil mix…

_Megan님이 2024-12-19에 게시함_

Help with a diagnosis for my thai con please.

I use my own soil mix in all my plants and a water meter so I dont think I’ve been overwatering. she gets regular fertilizer/ silica and I use timed grow lights to supplement during the winter and an infrared heater to keep the room temp stable. The windows are sealed with plastic over the winter so there isnt any drafts. My humidity stays around 80% . I preventatively treat all my new plants with spinosad and use bonide systemic granules in all my plants. I did forget to close the curtains but i dont think theres been enough sunlight to burn the plants (Im in Maryland).

She has new leaf growth but out of no where these black spots are on three leaves. Im not sure what they could be or what I’m doing wrong here. If anyone might know, Id appreciate the help.

![3개 중 1번째 첨부 파일](https://images.getplanta.com/v1/resize/6nDUT5Dy0iJxQC4pBS0u73NZLBS9mF8NY5a6GZPia3A/7pwow2I9TACULZ1DLsbRHw.webp?size=large)

![3개 중 2번째 첨부 파일](https://images.getplanta.com/v1/resize/6nDUT5Dy0iJxQC4pBS0u73NZLBS9mF8NY5a6GZPia3A/qYabG_4uTV-j1E6Bbdg1qw.webp?size=large)

![3개 중 3번째 첨부 파일](https://images.getplanta.com/v1/resize/6nDUT5Dy0iJxQC4pBS0u73NZLBS9mF8NY5a6GZPia3A/Kc4EGJdvQfCA8NsbcRK1xA.webp?size=large)

## 6개의 댓글

### 9s님이 2024-12-19에 댓글을 남겼어요.

looks fungal to me. how’s the airflow? that’s pretty high humidity. i would make sure you have a fan somewhere around to help the air move a bit.

#### Megan님이 2024-12-19에 답변했습니다.

Okay, thank you! Ill try that

#### Megan님이 2024-12-19에 답변했습니다.

Is there an anti fungal you’d recommend? I have copper spray and arber fungicide but i dont know if theres anything better

#### 9s님이 2024-12-20에 답변했습니다.

you can spray with copper but it won’t reverse the damage - just prevent further spreading of the spores

### Wolfen 🐺님이 2024-12-19에 댓글을 남겼어요.

Yea I'd say infection or thrips. The bigger dots make me think bacteria or fungal, but the tiny ones are similar to thrip damage.

### KJM님이 2024-12-21에 댓글을 남겼어요.

I have a great reference for you. Go to monstera Thai constellation the ultimate care guide (and how not to kill them). It's very thorough and informative and it's put out by lovethatleaf.com. you won't regret taking the time to read it.

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