---
title: "HELP! NEW CACTUS SEEDS! So I got some barrel cactus seeds (exact type…"
description: "HELP! NEW CACTUS SEEDS! So I got some barrel cactus seeds (exact type listed below) and planted them and some sources say to cover with plastic wrap and a…"
url: "https://getplanta.com/community/vOLjreBcQ-OpqrHIhVSc4w/o53xb26IK4cz1DsH0kTfjA"
community: "The Cactus & Succulent Circle"
author: "Rayne"
published: "2026-03-27T20:11:53.592303Z"
language: "en"
image: "https://images.getplanta.com/v2/cloudinary/global_data/communities/theCactusAndSucculentCircle.jpg"
---

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# HELP! NEW CACTUS SEEDS! So I got some barrel cactus seeds (exact type…

_Posted by Rayne on 2026-03-27_

HELP! NEW CACTUS SEEDS!  
So I got some barrel cactus seeds (exact type listed below) and planted them and some sources say to cover with plastic wrap and a ziploc bag while plants says to make sure there is plenty of airflow? I get the humidity dome thing but I’m also worried there isn’t enough air and it could mold?

Anyone have any tips on a happy-medium or is it okay just covered with the plastic and bag?

## 3 comments

### plantgeek commented on 2026-03-27

i personally like to use the paper towel method when starting from seed. 30 minute soak in 3% hydrogen peroxide to kill mold or fungus, then a 24h soak in water to boost chances of germination, and you put the seeds in wet paper towel in a plastic bag and forget it on your counter for two weeks 🤷‍♂️ easiest and least stressful way i've ever done it.

### Waspinator commented on 2026-03-28

Use the dome until most of the sprouts are visibly growing above the surface, then remove it. Add in any extra airflow/fans gradually

### AcesHigh commented on 2026-03-28

I have had luck with the dome method. Moist medium with dome on top, never had mold issue. Especially if it’s just moist dirt, not soaking wet. Where I have had mold issues and rotting with the paper towel method although I never did the peroxide method as stated above.

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