Mushroom grass seeds drop from corrupt or crimson grass blocks when you break them
Mushroom grass seeds come from destroying grass blocks in the Corruption or Crimson biomes. When you mine these blocks with any pickaxe or drill, there is a chance they will drop a mushroom grass seed instead of just the grass block itself. The drop rate is not may provide — you may break several blocks before one seed appears.
You can also find mushroom grass seeds lying on the ground in Corruption and Crimson biomes, though this is less reliable than farming them. The seeds are most common in the underground layers of these biomes, where the grass blocks are denser and easier to harvest in bulk.
The drop chance is roughly one seed per 10 to 15 blocks broken, though this varies slightly depending on your luck. If you need many seeds for a large biome project, plan to spend significant time mining in these areas.
Key Takeaways
- Mushroom grass seeds drop from Corruption or Crimson grass blocks when you break them with a pickaxe or drill.
- The drop is random, so you may need to break many blocks to collect several seeds.
- Underground Corruption and Crimson biomes have more grass blocks per area, making them faster to farm than surface layers.
- Once you have seeds, you can place them on mud blocks to spread mushroom grass and create new biome areas.
- Any pickaxe or drill works equally well for farming seeds — tool tier only affects mining speed, not drop rate.
Where to find Corruption and Crimson biomes
Your world spawns with either a Corruption or Crimson biome — not both. Check your map or explore the surface and underground to locate yours. These biomes are usually found on one side of the world, often in a large vertical strip that extends from the surface down into the cavern layer.
If you want to farm seeds efficiently, head underground into the Corruption or Crimson layer. The grass blocks are packed more densely here than on the surface, so you will break more blocks per minute and collect seeds faster. The underground biome also tends to be larger and more continuous, which means less walking between farming patches.
If your world has Corruption, you will not have Crimson, and vice versa. Both biomes work the same way for seed farming, so it does not matter which one your world contains.
How to farm mushroom grass seeds quickly
Bring a pickaxe or drill and mine the grass blocks in large patches. A copper pickaxe or better will work — the tool tier does not affect the drop rate, only how fast you mine. Break blocks in a systematic pattern so you do not miss any, and work through entire sections of the biome rather than jumping around randomly.
Bring torches or light sources so you can see clearly and work faster. A mining helmet or spelunker potion helps you spot ore and items on the ground, including seeds that have already dropped. Bring a bag or chest to store seeds as you collect them, since your inventory will fill quickly.
Work in the underground layers where grass blocks are most concentrated. You can identify these areas by the density of grass and the presence of mushrooms growing on the blocks. Avoid the surface Corruption or Crimson if possible, as these areas have fewer grass blocks per square and waste more of your mining time on stone and dirt.
What to do with mushroom grass seeds once you have them
Mushroom grass seeds spread mushroom grass when you place them on mud blocks. This is useful for creating new biome areas or expanding an existing Corruption or Crimson zone. The grass will spread to adjacent mud blocks over time, so you can build a large mushroom biome if you have enough mud and seeds.
You can also use mushroom grass to farm mushrooms, which grow on the grass and can be harvested for crafting materials and potions. Mushrooms are used in many recipes, including healing potions and buff potions, so a dedicated mushroom farm can be valuable as you progress through the game.
Place seeds on mud blocks in a pattern that allows the grass to spread outward. The grass spreads slowly, so if you need a large biome quickly, place many seeds across your mud area rather than waiting for one seed to expand on its own.
Why you might want mushroom grass in your world
Mushroom biomes spawn unique enemies and drop rare items that do not appear elsewhere. Building a mushroom biome lets you farm these drops without traveling far. Mushroom grass also looks distinct and can be used for building and decoration if you want to create themed areas in your base.
If your world has Corruption or Crimson instead of Hallow, a mushroom biome is one of the few ways to create a neutral zone that does not spread evil or holy blocks to your base. This is especially useful if you want to protect your home area from biome spread as the game progresses.
Mushroom biomes also have their own music and background, which makes them feel like a distinct area of your world. Many players create mushroom biomes purely for the aesthetic and atmosphere they add to a base.
Frequently Asked Questions
Do I need a specific pickaxe to get mushroom grass seeds?
No. Any pickaxe or drill will cause grass blocks to drop seeds. Stronger tools mine faster, so you collect seeds more quickly, but the drop rate is the same regardless of tool tier. Even a copper pickaxe works fine for farming.
Can I get mushroom grass seeds from the surface Corruption or Crimson?
Yes, but the underground layers are more efficient. Surface biomes have fewer grass blocks per area, so you will break more non-grass blocks while farming. Underground biomes are denser and faster to work through, making them the better choice for large seed collection.
What if my world does not have a Corruption or Crimson biome?
Every Terraria world spawns with one or the other. Check your map carefully or explore further — it may be on the opposite side of the world from where you started. If you still cannot find it after exploring both sides, you can create one by placing Corruption or Crimson blocks yourself, though this requires defeating bosses first to obtain the blocks.
How long does mushroom grass take to spread?
Mushroom grass spreads to adjacent mud blocks slowly over time, taking several in-game days. If you want to expand a biome quickly, place many seeds across a large mud area rather than waiting for one seed to spread on its own.
Can I use mushroom grass seeds on blocks other than mud?
No. Mushroom grass seeds only work on mud blocks. If you place a seed on stone, dirt, or any other block type, it will not spread. Make sure you have enough mud prepared before you start placing seeds.