---
title: "My corn plant has developed a gray greenish mold on the surface of…"
description: "My corn plant has developed a gray greenish mold on the surface of the dirt. It’s otherwise seeming to do OK does anybody know what this is or how I can treat…"
url: "https://getplanta.com/community/lKxUkhzRR_aIJD7o1QvtwQ/6l5AfNcsvVCvwU6E8r0yax?language=ja"
community: "Pests, diseases and problems"
author: "Forrest"
published: "2025-07-19T16:01:24.472351Z"
language: "en"
image: "https://images.getplanta.com/v1/resize/TaH-WJI4dQED-kN8IjzapyGM4aW-b3B_8MpxEaiuihg/oVkj2kUCRDemPwReXcyGyA.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)

# My corn plant has developed a gray greenish mold on the surface of…

_Forrestさんが2025-07-19に投稿しました_

My corn plant has developed a gray greenish mold on the surface of the dirt. It’s otherwise seeming to do OK does anybody know what this is or how I can treat it the plant is in our sunroom which can get pretty hot and humid.

![2件中1件目の添付ファイル](https://images.getplanta.com/v1/resize/TaH-WJI4dQED-kN8IjzapyGM4aW-b3B_8MpxEaiuihg/oVkj2kUCRDemPwReXcyGyA.webp?size=large)

![2件中2件目の添付ファイル](https://images.getplanta.com/v1/resize/TaH-WJI4dQED-kN8IjzapyGM4aW-b3B_8MpxEaiuihg/fECoRE3pSfC5yfZjYafALw.webp?size=large)

## 8件のコメント

### reeseさんが2025-07-19にコメントしました

this happened to me too. does it have drainage?

#### Forrestさんが2025-07-19に返信しました

Yes. I just repotted into a pot with drainage. I was going to try meep oil? I saw that helped with fungus on other plants.

#### reeseさんが2025-07-19に返信しました

I’m not educated enough on fungus to know, but it could be from overwatering. I had the same issue with overwatering my basil, and mold grew on the top of my soil.

#### Waspinatorさんが2025-07-20に返信しました

That's probably flowerpot parasol. It's a harmless mushroom that likes potted plant conditions. If it appears fairly rarely, it just means your soil is healthy. If it appears frequently, then you might be overwatering or need to work on soil drainage. Good airflow can also help. It's fine to let the myshroom do its full life cycle, but you might want to remove the fruiting body if you have pets that might try to eat it

### EllaBea’s Forestさんが2025-07-19にコメントしました

Is this newly repotted?

#### Forrestさんが2025-07-20に返信しました

Yes just repotted because the last pot did not have drainage holes

#### EllaBea’s Forestさんが2025-07-20に返信しました

Adding perlite is a good idea. It helps keep air around the roots. If you use dense soil it tends to hold on to too much water. It can lead to mold and root rot.

### Melodyさんが2025-07-19にコメントしました

This happens when the soil of a plant doesn’t get enough light. It might also be because of over watering.

It is totally fine to fix it just take the top inch of soil off and throw it away. Then put some new fresh soil in. This also happens less if you use a more chunky soil mix.

Hope this helps!

---

_Plantaコミュニティ (https://getplanta.com)。閲覧はどなたでも可能です。投稿、コメント、いいねをするには、Plantaアプリをダウンロードしてください: https://getplanta.com/download_