Grass

Grass (or tall grass in the Legacy Console Edition) is a non-solid plant block that has seeds as a drop. Its color is biome-dependent, and matches grass blocks.

Obtaining
When broken normally, all variants will drop 0 or 1 seeds. See Grass for more information. They can be obtained as an item using shears.

The double tall grass and large ferns will drop two of the respective single block when broken using shears.

It can also be obtained from the Creative inventory.

Natural generation
Grass and double tall grass generate on grass blocks in most biomes that generate grass.

Ferns and large ferns occur naturally only in jungle, taiga, cold taiga and mega taiga biomes.

Shrubs, though identical in appearance to the dead bushes found in deserts and mesas, do not naturally generate.

Bone meal
Bone meal can be used on a grass block to grow grass and occasionally flowers on it and in its vicinity. It can also be used on either tall grass or a fern to create a double tall grass or large fern, respectively.

Shrubs
In Java Edition and Legacy Console Edition shrub looks identical to the dead bush, except that it will occasionally drop seeds instead of sticks, and is randomly offset from the center of its block like grass. It can be obtained using. In Legacy Console Edition, shrubs are available in the Creative inventory and have a green biome-dependent hue.

In Bedrock Edition, this block is named 'Fern' but has the texture of grass.

Seeds
All variants of grass have a 1/8 chance of dropping seeds when broken without using shears.

Flower pots
Ferns can be placed in flower pots.

Data values
Grass is defined by its ID and block data. Grass also has a block state which is expected to replace the functionality of block data in a future version.

Block data

 * Block 31


 * Block 175

Block state
minecraft:tallgrass

Trivia

 * Grass cannot be directly set on fire from lightning. However, fire from nearby blocks can spread to it. Oddly enough, the top of grass can be lit but it will not burn this way. When any kind of tall grass is set on fire, the fire seems to hover just over the grass, as if it were a full block.
 * Even though ferns do not produce seeds in real life, as they emit spores instead, they can drop seeds if broken.
 * Grass is slightly offset from the block it is sitting on (as seen in the second screenshot). This causes fields of grass appear more contiguous and not like dotted patches of hair atop blocks.
 * This can sometimes cause grass to clip horizontally through block corners; this is an intentional feature.
 * It can also clip vertically through block corners, which is indeed a bug, however Mojang have stated it will not be fixed.
 * Grass can appear in caves on dirt near lava, and rarely, within a few blocks of bedrock. It can also generate in a village house.
 * Using bone meal on grass in a spawn-protected area on a server will still produce tall grass and flowers.
 * Placing any block on grass will overwrite the grass, and will not drop seeds.
 * When being chased by mobs, hiding in double tallgrass will often cause them to lose sight of players, even if they are a few blocks away. Sugar cane also has this property.
 * When the topmost block of tall grass or fern is hit with a sword in creative mode, the particles emitted are that of sunflower block.