How To Make A Glowing Mushroom Biome In Terraria

You can make a glowing mushroom biome in Terraria by creating a specific surface setup and using the right materials.
 
The glowing mushroom biome is one of the most visually stunning and useful biomes you can build, and it’s totally doable even if you’re new to the game.
 
It’s a unique biome that spawns friendly Mushroom Monsters, lets you grow glowing mushrooms, and houses the Truffle NPC who sells some awesome items.
 
In this guide, we’ll walk you through exactly how to make a glowing mushroom biome, what blocks and seeds you need, and how to set it up so it works flawlessly.
 
Let’s dive right in.
 

How To Make A Glowing Mushroom Biome In Terraria: The Basics

The first step to make a glowing mushroom biome is understanding what actually defines this biome in the game.
 
A glowing mushroom biome is recognized by the game when you have at least 100 blocks of Mushroom Grass or Mushroom Vines in a single area.
 
This count only includes items counted by the game’s biome detection system, so you need to be precise with your placement.
 
You’ll know the biome is active when the background changes to a dark, blue-tinted scenery with floating spores and glowing mushrooms appear naturally.
 
The easiest way to make a glowing mushroom biome is to build it underground, though surface versions work too with a bit more effort.
 
Let’s break down the exact steps you need to follow.
 

1. Gather The Essential Materials

Before you start building, you need to collect a few key items to make a glowing mushroom biome.
 
First, you need Mushroom Grass Seeds, which you can buy from the Dryad NPC for 1 silver coin each.
 
You also need Mud Blocks, because Mushroom Grass only grows on mud, not dirt or stone.
 
If you’re playing in Hardmode, you’ll also want to grab some Glowing Mushrooms themselves, which drop from glowing mushroom trees or can be found naturally in existing underground mushroom biomes.
 
You can also use a Clentaminator with Dark Blue Solution to quickly convert existing grass into Mushroom Grass if you’re late-game and want a shortcut.
 
Finally, make sure you have a pickaxe or hammer to shape the terrain and a decent supply of torches or glowsticks for visibility while you work.
 

2. Build The Base Platform

Now that you have your materials, it’s time to lay down the foundation for your glowing mushroom biome.
 
Decide whether you want to build it underground or on the surface, but underground is generally easier because the background already matches the mushroom biome aesthetic.
 
Clear out a large rectangular area that’s at least 30 blocks wide and 15 blocks high to give yourself room to work.
 
Fill the entire floor with Mud Blocks, making sure the mud is at least one block thick, but two blocks thick is better to prevent corruption from spreading.
 
Once your mud floor is ready, plant the Mushroom Grass Seeds by simply using them on the mud blocks, just like you’d plant regular grass seeds.
 
The seeds will instantly convert the mud into Mushroom Grass, which has a distinctive blue-green glow.
 

3. Wait For The Biome To Activate

After planting your seeds, the glowing mushroom biome won’t activate instantly, so you need to be patient.
 
The Mushroom Grass will slowly spread to adjacent mud blocks over time, but since you already placed 100+ mud blocks, you may already be close to the threshold.
 
To speed things up, you can plant more seeds on every single mud block rather than waiting for natural spread.
 
Once you have at least 100 blocks of Mushroom Grass in the area, the game will officially register it as a glowing mushroom biome.
 
You’ll know it’s working when you see the background change to a dark blue scene with floating glowing particles and hear the eerie, ambient music.
 
If you don’t see the change, count your Mushroom Grass blocks by walking over them with a depth meter or just add more mud and seeds.
 

Tips For Making A Glowing Mushroom Biome That Actually Works

There are a few common pitfalls when you try to make a glowing mushroom biome, so let’s cover how to avoid them.
 
First, never place Mushroom Grass on anything other than mud, because it won’t grow or spread on dirt, stone, or sand.
 
Second, keep your glowing mushroom biome away from Corruption or Crimson biomes, because those can overtake your mud and destroy the Mushroom Grass.
 
If you’re worried about spread, line the outside of your biome with a non-convertible block like wood, clay, or bricks.
 
Third, make sure you have enough walls behind the biome, because background walls don’t count toward the 100-block threshold, but they do affect whether NPCs like the Truffle can move in.
 
You can use any wall type, but Mushroom Wall crafted from Glowing Mushrooms looks the most thematic.
 

1. Grow Glowing Mushroom Trees For Extra Blocks

If you want to make a glowing mushroom biome even faster, you should grow glowing mushroom trees as well.
 
These tall, fungal trees spawn naturally in mushroom biomes and drop Glowing Mushrooms when chopped down.
 
Each glowing mushroom tree trunk counts as Mushroom Vines, which also count toward your 100-block biome threshold.
 
To grow them, just leave a few mud blocks with Mushroom Grass open and wait, because they’ll spawn randomly over time.
 
You can speed this up by planting Glowing Mushrooms directly on Mushroom Grass, but they only grow into trees if there’s enough vertical space above them.
 

2. Use A Clentaminator For Large Biomes

If you’re in Hardmode and want to make a glowing mushroom biome really fast, you can use the Clentaminator with Dark Blue Solution.
 
This tool sprays a mist that instantly converts any grass, jungle grass, or hallowed grass into Mushroom Grass, as long as the underlying block is mud.
 
You can buy the Clentaminator from the Steampunker NPC, and Dark Blue Solution costs 25 silver per unit from her as well.
 
This method is amazing for large-scale builds, but you still need to lay down all your mud first.
 
Spray the solution generously over the mud and watch the entire area turn into a glowing mushroom biome within seconds.
 

What You Can Do With A Glowing Mushroom Biome

Once you successfully make a glowing mushroom biome, you unlock a ton of cool benefits that make the effort worthwhile.
 
First, you can harvest Glowing Mushrooms from the biome, which are a great food source and also used to craft Mushroom Grass Seeds, Mushroom Walls, and the Shroomite Bars in Hardmode.
 
Second, a glowing mushroom biome is the only place where the Truffle NPC will move in, and he sells the Mushroom Spear, Mushroom Hammer, and the prized Autohammer.
 
Third, if you’re fishing in a glowing mushroom biome, you can catch the Truffle Worm, which is a rare bait that summons Duke Fishron, one of the toughest bosses in the game.
 
And of course, the biome itself looks incredible with its glowing blue plants and ambient spores, making it a perfect base for a themed build or an AFK farm.
 
You can even create a glowing mushroom biome farm for infinite Glowing Mushrooms by letting the grass spread and harvesting every few minutes.
 

So, How To Make A Glowing Mushroom Biome In Terraria?

To make a glowing mushroom biome in Terraria, you need to place at least 100 Mushroom Grass blocks on mud and wait for the game to register the area as a valid biome.
 
Start by buying Mushroom Grass Seeds from the Dryad, lay down a large mud platform, and plant those seeds across every block.
 
Then, give the biome a moment to activate, and you’ll see the distinct blue background, hear the unique music, and start spawning Glowing Mushrooms automatically.
 
Once your glowing mushroom biome is up and running, you can invite the Truffle NPC, craft Shroomite gear, and even fish for Truffle Worms.
 
It’s one of the most rewarding biomes to build in the game, and it’s well worth the upfront material farming.
 
Now you know exactly how to make a glowing mushroom biome in Terraria, so grab your mud and seeds and get building.
 
Your own glowing corner of the world is just a few minutes of work away.