Grasses

Grass is a type of block which covers most of the above-ground landscape. It enables many different plants to grow on it.

Natural grass types

These types of grass occur naturally throughout the world. They can also be planted manually with their respective seeds. Regular grass can furthermore be planted with the Staff of Regrowth or Axe of Regrowth.

If there is room below a grass block, the respective type of vine can grow downward from it. Acorns planted in grass (except Mushroom grass) will grow into the respective type of tree.

Type		Soil type	Seeds	Notes
	Grass Internal Tile ID: 2	Dirt		Generated in Forests and on Floating Islands Naturally grows trees, Mushrooms, wild plants, Dayblooms, and Yellow Marigolds over time Sufficient for planting Pumpkins and Sunflowers
	Corrupt grass Internal Tile ID: 23	Dirt		Generated in The Corruption Naturally grows Ebonwood trees, Vile Mushrooms, wild Corrupt plants, Deathweed, and thorny bushes over time Emits particles
	Corrupt Jungle grass Internal Tile ID: 661	Mud		Generated when the Corruption spreads into the Jungle and Underground Jungle Naturally grows Ebonwood trees, Vile Mushrooms, wild Corrupt plants, Deathweed, and thorny bushes over time
	Crimson grass Internal Tile ID: 199	Dirt		Generated in The Crimson Naturally grows Shadewood trees, Vicious Mushrooms, wild Crimson plants, Deathweed, and thorny bushes over time
	Crimson Jungle grass Internal Tile ID: 662	Mud		Generated when the Crimson spreads into the Jungle and Underground Jungle Naturally grows Shadewood trees, Vicious Mushrooms, wild Crimson plants, Deathweed, and thorny bushes over time
	Mushroom grass Internal Tile ID: 70	Mud		Generated in Glowing Mushroom biomes Naturally grows Glowing Mushrooms and Giant Glowing Mushrooms over time Gives off a faint glow
	Jungle grass Internal Tile ID: 60	Mud		Generated in the Jungle and Underground Jungle Naturally grows Mahogany trees, wild Jungle plants, Moonglow, and Bamboo in the Jungle over time Naturally grows Mahogany trees, wild Jungle plants, Moonglow, thorny bushes, Jungle Spores, Jungle Roses, and Nature's Gifts in the Underground Jungle over time Sufficient for planting Sunflowers
	Hallowed grass Internal Tile ID: 109	Dirt		Generated in The Hallow Naturally grows Pearlwood trees, Mushrooms, wild Hallowed plants, and Dayblooms over time Emits sparkling particles Sufficient for planting Pumpkins and Sunflowers
	Ash grass Internal Tile ID: 633	Ash		Generated in The Underworld in the outer two-thirds of the world Naturally grows Ash trees, wild Ash plants, and Fireblossoms over time Cannot be destroyed by lava, unlike other grass types Sufficient for planting Sunflowers

Mowed grass types

These types of grass have certain special properties. See Lawn Mower for details.

Type		Soil type	Source
	Mowed grass Internal Tile ID: 477	Dirt	Lawn Mower used on grass
	Mowed Hallowed grass Internal Tile ID: 492	Dirt	Lawn Mower used on Hallowed grass

Wild plants on grass

These weeds and flowers grow naturally on the different types of grass on the surface. They do not grow below the surface (except on Jungle, Mushroom, and Ash grass), and do not grow on mowed grass. Plants growing on painted grass blocks will take on the block's color.

Some of these plants can be planted manually with Flower Seeds, Flower Boots, and the Rubblemaker. The rest cannot be planted manually.

Images	Tile ID	Grows on	Notes
	3 (0–5)	Grass	May drop Grasshoppers, Worms, or their gold variants. Drops 1–2 (tile ID 3) / 2–4 (tile ID 73) Hay if cut with a Sickle. Drops a Seed (50*1/2 (50%) chance) if the Blowpipe or Blowgun is in the player's inventory.
	3 (6–7, 9–20)
	73 (0–5)
	73 (6–7, 9–20)
	24 (0–5)	Corrupt grass Corrupt Jungle grass	Contributes to the Corruption biome tile count. Drops 1–2 Hay if cut with a Sickle.
	24 (6–7, 9–20)
	201 (0–5)	Crimson grass Crimson Jungle grass	Does not contribute to the Crimson biome tile count. Drops 1–2 Hay if cut with a Sickle.
	201 (6–14, 16–22)
	71 (0–4)	Mushroom grass	Drops Glowing Mushrooms and may drop Mushroom Grass Seeds. Produces ambient light. Contributes to the Glowing Mushroom biome tile count.
	61 (0–5)	Jungle grass	May drop Grubbies, Sluggies, Buggies, or Jungle Grass Seeds. Contributes to the Jungle biome tile count. Can grow underwater, unlike other wild plants. Drops 1–2 (tile ID 61) / 2–4 (tile ID 74) Hay if cut with a Sickle.
	61 (10–22)
	233 (0–7)
	233 (9–20)
	74 (0–5)
	74 (6–7, 9–16)
	110 (0–5)	Hallowed grass	Contributes to the Hallowed biome tile count. Drops 1–2 (tile ID 110) / 2–4 (tile ID 113) Hay if cut with a Sickle.
	110 (6–7, 9–20)
	113 (0–5)
	113 (6–7)
	637 (0–5)	Ash grass	May drop Ash Grass Seeds. Drops 1–2 Hay if cut with a Sickle.
	637 (6–10)

Spread

This section is about grass spreading onto bare soils. For details about grass types converting other grass types, see Biome spread § Grass.

Grass of any type spreads from existing blocks to other blocks of the correct soil type. The following restrictions apply:

• Pure, mowed, and mowed Hallowed grass does not spread below the surface whatsoever. The player needs to be at least at 4 feet (on the Depth Meter) on the surface for these types of grass underneath to be able to spread.
• Grass only spreads to an adjacent block, i.e., a block within the eight tiles directly surrounding the grass block.
• Grass does not spread to blocks that have lava in one of their adjacent tiles (with the exception of Ash grass^Verify).
• Grass only spreads to blocks that have at least one tile of open space within their adjacent tiles (i.e., grass does not spread to blocks that are fully surrounded by eight solid blocks).

Additionally:

• Dirt Blocks and Mud Blocks are both eligible soils for both types of the evil grasses. For instance, Corrupt Jungle grass can spread onto Dirt Blocks (resulting in regular Corrupt grass), and regular Corrupt grass can spread onto Mud Blocks (resulting in Corrupt Jungle grass).
• The mowed grasses also spread to adjacent Dirt Blocks (only above the surface), but the resulting new grass will not be mowed.
• Painted grass will spread its paint, too.
• Corruption and Crimson thorny bushes can create Corrupt/Crimson grass on adjacent Dirt Blocks and Corrupt/Crimson Jungle grass on adjacent Mud Blocks.

Tips

• When mining blocks with grass, the grass will absorb the first hit from the pickaxe/drill. Hence, unlike mining most blocks, a tool with high mining speed will actually always outperform a slower tool, even if the slower one has higher pickaxe power. This means that the best pre-Hardmode item for digging grass would be the Bone Pickaxe. In theory, the Shroomite Digging Claw has the best speed out of the Hardmode tools.
  • This becomes particularly important in the Jungle biome, due to the prevalence of Jungle grass.

Trivia

Examples of the two unused grass graphics.

• There are unused graphics for two other grass types in the game's files. One is a yellow-green grass akin to Jungle grass, although it is tiled on dirt. Its internal name Tiles_2_Beach.png implies that it was originally intended for the Ocean. The second is a variation of Flesh Blocks, tiled to work as a grass.
  • Crimson grass is referred to as FleshGrass internally, so the second grass variation may have been an early Crimson grass sprite.

Gallery

• 

  The light provided from Mushroom grass.

History

 Desktop version

• Desktop 1.4.4:
  • Added Ash grass.
  • Corrupt grass and Crimson grass can now grow and spread on mud.
  • Mushroom grass can now glow different colors when painted.

• Desktop 1.4.0.1:
  • Artificial Jungle biomes now require 140 Jungle grass blocks instead of 100.
  • Added mowed grass.

• Desktop 1.2.4:
  • Replaced grass graphics for when they are surrounded.
  • Grass is now removed when a player covers it in solid tiles.

• Desktop 1.2.3:
  • Acorns can now be planted on all grass types.
  • Corrupt grass, Crimson grass, and Hallowed grass wall spreads further.
  • Fixed bug where the player can not pick up Crimson grass and Hallowed grass with Dirt Rod.

• Desktop 1.2: Crimson grass variant introduced.

• Desktop 1.1: Hallowed grass variant introduced.

• Desktop-Release: Introduced.