Grass

Grass (commonly named Tall Grass or Long Grass) is a non-solid plant used to obtain seeds. The color of grass is biome dependent and is usually the same color as leaves.

Obtaining
When broken normally, all variants have will drop either nothing or seeds. Grass and ferns must be broken using shears to obtain as an item.

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

Water will destroy any tall grass in its way.

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, and mega taiga biomes.

Bone Meal
Bone Meal can be used on a grass block to grow grass and occasionally flowers on it and in its vicinity.

Bone meal can also be used on either tall grass or a fern to create a double tall grass or large fern.

Usage
Grass requires a block light of 8 or higher to survive.

Seeds
All variants of grass have a 1/24 chance of droping seeds. In addition, using shears to harvest the block itself will have a 1/24 chance to drop seeds as well.

Flower Pots
Ferns can be placed in flower pots.

Data Values
Block 31

Block 175

Trivia

 * One of the variants of grass looks identical to the dead bush, but is able to give seeds and has an offset from the ground.
 * It can be obtained using.
 * 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 ferns use spores instead, they can drop seeds if broken.
 * Grass is slightly offset from the block it is sitting on (as seen in the third screenshot).
 * Grass can appear in caves on dirt near lava, and rarely, within a few blocks of bedrock or in a village house.
 * Using bonemeal on grass in a spawn-protected area will still produce tall grass and flowers.
 * Ferns in real life usually grow multiple stems from one plant unlike the Minecraft fern where it is just one stem. It sort of resembles a small sapling.
 * If you're standing in double tall grass you will be hidden from mobs. This also works with flowers, vines and sugar cane that are at least two blocks tall.

Console Edition

 * The dead shrub variant of tall grass is available in the creative menu.
 * Grass is called "Grass Block".