---
title: "Does anyone know what are these bumps on my Thanksgiving Cactus? I…"
description: "Does anyone know what are these bumps on my Thanksgiving Cactus? I couldn’t find any pests and the one directly next to it, has no problems. Thanks for any…"
url: "https://getplanta.com/community/lKxUkhzRR_aIJD7o1QvtwQ/xoRVTlBLLhTdIFvahcbbPS?language=ja"
community: "Pests, diseases and problems"
author: "Plantdaddy"
published: "2025-03-31T16:25:01.195215Z"
language: "en"
image: "https://images.getplanta.com/v1/resize/_TB2VyhmrEYyKwBBH5x3H6_rApzWbq0xO-FjTvXtlfA/SfMbpTBJRS634SeTQFiH_g.webp?size=large"
---

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# Does anyone know what are these bumps on my Thanksgiving Cactus? I…

_Plantdaddyさんが2025-03-31に投稿しました_

Does anyone know what are these bumps on my Thanksgiving Cactus? I couldn’t find any pests and the one directly next to it, has no problems. Thanks for any assistance.

![2件中1件目の添付ファイル](https://images.getplanta.com/v1/resize/_TB2VyhmrEYyKwBBH5x3H6_rApzWbq0xO-FjTvXtlfA/SfMbpTBJRS634SeTQFiH_g.webp?size=large)

![2件中2件目の添付ファイル](https://images.getplanta.com/v1/resize/_TB2VyhmrEYyKwBBH5x3H6_rApzWbq0xO-FjTvXtlfA/QOWq1dnFRjauf2L-9yqQMQ.webp?size=large)

## 5件のコメント

### exitJiraffeさんが2025-03-31にコメントしました

Looks like scale, if they come off with your fingernail. You’ll have to remove each one and treat with an insecticide. I do a check and spray every week when mine have scale.

If not, could be edema? But I’m betting is scale.

### Sunnyさんが2025-03-31にコメントしました

It looks like edema per googling “blisters on Christmas Cactus.

![1件中1件目の添付ファイル](https://images.getplanta.com/v1/resize/wefqOljjhEOiS9LRzOB1-QhxkVJiB4A5DGumXhnNrhs/YuDvsMbvRnSdT9CulytUAA.webp?size=large)

#### Adrianさんが2025-04-01に返信しました

Agreed. I’d say edema. You can try to aerate the soil to help, or move it away from frequently opening doors or drafty windows or air vents. Don’t remove any affected leaves or it’ll just spread to the next set of leaves. It’s not fatal or anything that can spread to other plants; just has to do with humidity and temperature changes affecting the plant. Keeping it somewhere with a consistent temperature that isn’t at risk of any drafts coming near the plant should help, and making sure your cactus is in well draining soil is also important. I’ve found edema affects epiphytic plants like this the most, so please don’t feel like you’re doing anything wrong. Hope this helps!

#### Plantdaddyさんが2025-11-10に返信しました

It didn’t seem to be improving, so I actually did remove all the affected leaves, and left what was unaffected, and it actually starting growing normally again and started budding and flowering. Thanks!

#### Sunnyさんが2025-11-10に返信しました

That’s great. I have over 200 plants and can’t grow a Christmas cactus beyond 6 months. 😁

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