How to Find and Plant Mushroom Grass Seeds in Terraria

Where to Find Mushroom Grass Seeds

Mushroom grass seeds drop from mushroom biome enemies and can be purchased from the Truffle NPC. The most reliable way to get them is to farm enemies in an underground or surface mushroom biome — Fungi Bulbs, Mycelium Slimes, and Armored Fungi all drop seeds when killed. Each enemy has roughly a 1 in 4 to 1 in 5 chance of dropping a seed, so you will need to defeat multiple enemies to build up a stock.

If you do not want to farm, the Truffle NPC sells mushroom grass seeds for 10 silver coins each once you have built him a suitable home. The Truffle requires a house in a mushroom biome to move in, so this option only works after you have established a mushroom biome area or found one naturally. Buying seeds is slower than farming but guarantees a steady supply if you have the coins.

Key Takeaways

Mushroom grass seeds drop from Fungi Bulbs, Mycelium Slimes, and Armored Fungi in mushroom biomes at roughly a 1 in 4 to 1 in 5 rate per kill.
The Truffle NPC sells mushroom grass seeds for 10 silver coins each, but only if he is living in a mushroom biome house.
You can plant mushroom grass seeds on mud blocks to spread mushroom grass and create new mushroom biome areas.
Underground mushroom biomes are easier to farm than surface ones because enemies spawn more densely in enclosed spaces.

How to Set Up a Farming Area

The fastest way to collect mushroom grass seeds is to build a small farm in an existing mushroom biome. Find a natural underground mushroom biome or create one by placing mud blocks and planting mushroom grass seeds you already have. Once you have a mushroom biome area, enemies will spawn there automatically as long as you are nearby and the area is dark enough.

Build a platform or small room where you can stand and let enemies spawn around you. Use torches or other light sources to control where enemies appear — they spawn in darkness, so keeping your farming spot dark and the surrounding area lit will concentrate spawns in your kill zone. A straightforward 10-by-10 room with a few platforms is enough to farm steadily.

Bring a weapon that deals damage quickly to multiple enemies at once. Swords, spears, or magic weapons work well. Stand in your farming area for 5 to 10 minutes and defeat enemies as they spawn. You should collect 10 to 20 seeds in that time, depending on your weapon and how many enemies spawn.

Planting Mushroom Grass Seeds on Mud

Mushroom grass seeds only grow on mud blocks, not on regular dirt or stone. If you want to spread mushroom grass or create a new mushroom biome, you must first place mud blocks where you want the grass to grow. Mud is found naturally in underground mushroom biomes, or you can craft it by combining dirt blocks with mushroom vines or mushroom grass.

Once you have mud blocks in place, open your inventory and select a mushroom grass seed. Aim at the mud block and use it the same way you would plant any other seed. The seed will plant when ready, and mushroom grass will begin to grow. Mushroom grass spreads to adjacent mud blocks over time, so if you plant seeds in a line or cluster, they will fill in the surrounding area within a few minutes.

Mushroom grass grows faster in darkness, so if you are trying to establish a large mushroom biome, keep the area unlit while the grass spreads. Once the grass covers the area you want, you can add light sources and NPCs if you wish.

Farming Enemies Efficiently

To maximize seed drops, focus on killing Fungi Bulbs first — they are the most common mushroom biome enemy and spawn in large numbers. Mycelium Slimes are faster and deal more damage, so prioritize them if you have strong armor and healing items. Armored Fungi are slower and tougher but drop seeds at the same rate, so they are worth fighting if they appear but not worth hunting specifically.

Bring healing potions and wear armor with at least 15 defense to start. If you are early in the game, farm in a small enclosed space so enemies cannot overwhelm you. If you are mid-game or later, you can farm in a larger open area and use area-of-effect weapons to kill multiple enemies at once, which speeds up seed collection.

Farm for 10 to 15 minutes at a time to avoid boredom and to give yourself time to sell or use the seeds you collect. If you need seeds urgently, farming for 30 minutes straight will give you 30 to 60 seeds depending on your gear and the spawn rate in your biome.

Using the Truffle as an Alternative

Once you have built a house in a mushroom biome and the Truffle has moved in, you can buy mushroom grass seeds from him at any time. This is slower than farming if you need a large number of seeds quickly, but it is reliable and does not require combat. Each seed costs 10 silver coins, so buying 50 seeds will cost 5 gold coins.

The Truffle also sells other mushroom biome items like mushroom seeds and mushroom vines, so his shop is useful for establishing or expanding a mushroom biome. If you have the coins and do not want to farm, buying from the Truffle is a valid path, especially late in the game when coins are abundant.

Common Mistakes to Avoid

Do not plant mushroom grass seeds on regular dirt or stone — they will not grow. Always use mud blocks. If you are trying to expand a mushroom biome and the grass is not spreading, check that the blocks around the grass are mud, not dirt or other materials.

Do not farm in a lit area. Enemies spawn much more slowly in light, so your seed drops will be slow. Keep your farming room dark and use a light source only when you need to see clearly to aim your weapon.

Do not assume all mushroom biome enemies drop seeds at the same rate. Fungi Bulbs are the most common and spawn fastest, so they are the best target for seed farming. If you are fighting only Armored Fungi or Mycelium Slimes, your seed collection will be slower.

Frequently Asked Questions

Can I plant mushroom grass seeds on dirt or stone?

No. Mushroom grass seeds only grow on mud blocks. If you plant a seed on dirt or stone, nothing will happen. You must place mud blocks first, then plant the seeds on the mud.

How long does mushroom grass take to spread?

Mushroom grass spreads to adjacent mud blocks within a few minutes, faster in darkness. If you plant a seed and wait 5 to 10 minutes in the dark, the grass will cover a small area around the seed. In light, spreading is much slower.

Do I need to be in a mushroom biome to farm seeds?

Yes. Mushroom biome enemies only spawn in mushroom biomes, so you must farm in an underground or surface mushroom biome to get seed drops. You can create a mushroom biome by placing mud blocks and planting mushroom grass, but you need at least some mushroom grass or mud to start.

Is it faster to farm or buy seeds from the Truffle?

Farming is faster if you need many seeds quickly and have decent combat gear. Buying from the Truffle is slower but requires no combat and is reliable if you have coins. For small amounts of seeds, buying is easier; for large amounts, farming is more efficient.

What weapon is best for farming mushroom biome enemies?

Any weapon that deals damage quickly works. Swords and spears are reliable and straightforward to use. Magic weapons or summoner weapons are good if you have the mana or minion slots. Focus on weapons that hit multiple enemies at once to speed up farming.

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