---
title: "How often should I apply sulfur fungicide? Treating for suspected…"
description: "How often should I apply sulfur fungicide? Treating for suspected flat mites, no other visible pests. Gave them their first treatment today, and was wondering…"
url: "https://getplanta.com/community/-Hvw2UpVTXuBN-5q5GuMYg/mhmpITFLggWSvAEB9UXuGC"
community: "Hoya Hoarders"
author: "McKenzie"
published: "2026-02-12T23:33:54.168591Z"
language: "en"
image: "https://images.getplanta.com/v1/resize/YA3Sk67Adi5xc6ttcdpTAdJiNvUVt-lLxx54IAQIHSA/CK7DRPgDREaG-KktGtSpfg.webp?size=large"
---

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# How often should I apply sulfur fungicide? Treating for suspected…

_Posted by McKenzie on 2026-02-12_

How often should I apply sulfur fungicide? Treating for suspected flat mites, no other visible pests. Gave them their first treatment today, and was wondering how long I should wait to do another.

![Attachment 1 of 1](https://images.getplanta.com/v1/resize/YA3Sk67Adi5xc6ttcdpTAdJiNvUVt-lLxx54IAQIHSA/CK7DRPgDREaG-KktGtSpfg.webp?size=large)

## 2 comments

### LoquitoDeLasPlantas commented on 2026-02-13

It depends on how severe your infestation is. I have had to do it every week once. Basically I sprayed it all over, kept it on the plant 3-4 days, rinse it off(so it can photosynthesize) and the spray after a full week. Now I use a brush to put it on, that way I can scrape any eggs off at the same time. And I, so far, have only done one treatment and just continue to clean it with the brush. Look up the flatmite's lifecycle, that way you can attack at every stage and get rid of them completely 🤞🏽

#### McKenzie replied on 2026-02-13

Thank you! I literally could see no other pests so I’m pretty sure it’s flat mites based off the damage to the plants. I followed the directions on the fungicide but from where it’s so watered down I wasn’t sure if it was like a weekly thing or something I only had to do once. I’ll keep an eye on it!

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