---
title: "Hello! My plant has been sick for a bit. The leaves have crusty dark…"
description: "Hello! My plant has been sick for a bit. The leaves have crusty dark spots on them that progressively get worse. Some of the leaves are turning yellow and…"
url: "https://getplanta.com/community/lKxUkhzRR_aIJD7o1QvtwQ/iGHiE6MM3hEgPL5fMF9Xkj"
community: "Pests, diseases and problems"
author: "Grass"
published: "2026-01-10T22:41:22.802815Z"
language: "en"
image: "https://images.getplanta.com/v1/resize/GuzhgeffSal9QJf7okBIo0cjeI-XQUnFjSJrUxCL2i4/iMXKIlnxRtO4JbCJz4xyww.webp?size=large"
---

[Community](https://getplanta.com/community.md) / [Pests, diseases and problems](https://getplanta.com/community/lKxUkhzRR_aIJD7o1QvtwQ.md)

# Hello! My plant has been sick for a bit. The leaves have crusty dark…

_Posted by Grass on 2026-01-10_

Hello! My plant has been sick for a bit. The leaves have crusty dark spots on them that progressively get worse. Some of the leaves are turning yellow and falling off. How do I help? Is it pests? I have treated with insect killer but this still persists

![Attachment 1 of 2](https://images.getplanta.com/v1/resize/GuzhgeffSal9QJf7okBIo0cjeI-XQUnFjSJrUxCL2i4/iMXKIlnxRtO4JbCJz4xyww.webp?size=large)

![Attachment 2 of 2](https://images.getplanta.com/v1/resize/GuzhgeffSal9QJf7okBIo0cjeI-XQUnFjSJrUxCL2i4/bo_whps3Qyu7unTIieQHmw.webp?size=large)

## 4 comments

### Auxsman commented on 2026-01-10

Sounds like a root issue if it’s not pests \& the rest looks pretty healthy.

You should check the roots \& maybe do a soil change with fertilization😊

#### Grass replied on 2026-01-10

Awesome! Thank u so much :))

### Plant\_Joy commented on 2026-01-11

Mosquito bit tea is what I water the soil with to kill fungus gnats. If you see any pests using a magnifying glass, I would immediately isolate the plant and treat.  
If you check for root rot and repot, I highly recommend a mix of Foxfarm, orchid bark, pumice, worm casting - I repot all my plants with a more chunky airy soil mixture to prevent root rot :) And for some reason, plants LOVE fish fertilizer, which stinks but works!

#### Grass replied on 2026-01-11

Thank uuu!!! I will try it!

---

_Source: the Planta community (https://getplanta.com). Reading is open to everyone. To post, comment and like, get the Planta app: https://getplanta.com/download_