---
title: "My sister has this jalapeño plant. And she just noticed this on the…"
description: "My sister has this jalapeño plant. And she just noticed this on the underside of the leaf. Can you tell me what this is and should we be concerned? And how do…"
url: "https://getplanta.com/community/lKxUkhzRR_aIJD7o1QvtwQ/csjJkullMyqSiQuUjZALuI?language=ja"
community: "Pests, diseases and problems"
author: "Rhona"
published: "2025-04-18T03:24:37.993007Z"
language: "en"
image: "https://images.getplanta.com/v1/resize/6gF7ig8Yfg4XBQWjVQtXtPQ1sA8MxysvUi8aI3Q6ZZQ/Ia4lqFGRSaiQVJvBQgN3FQ.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 sister has this jalapeño plant. And she just noticed this on the…

_Rhonaさんが2025-04-18に投稿しました_

My sister has this jalapeño plant. And she just noticed this on the underside of the leaf. Can you tell me what this is and should we be concerned? And how do we fix it? Thank you for your help.

![1件中1件目の添付ファイル](https://images.getplanta.com/v1/resize/6gF7ig8Yfg4XBQWjVQtXtPQ1sA8MxysvUi8aI3Q6ZZQ/Ia4lqFGRSaiQVJvBQgN3FQ.webp?size=large)

## コメント1件

### Sunnyさんが2025-04-18にコメントしました

It could be thrips. I highly recommend not touching them since they can quickly spread to other plants by your hand. Treat the entire plant with neem oil or insecticidal soap.

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