Bamboo/BS

Name	Default value	Allowed values	Description
age	`0`	`0` `1`	The age of the bamboo, if this is 1 the bamboo appears thicker.
leaves	`none`	`large` `none` `small`	The size of the leaves on this bamboo block.
stage	`0`	`0` `1`	The stage is incremented at random intervals. At stage 1, bamboo may try to grow more bamboo above it.

Name	Metadata Bits	Default value	Allowed values	Values for Metadata Bits	Description
age_bit	`0x8`	`false`	`false` `true`	`0` `1`	The stage is incremented at random intervals. When true, bamboo may try to grow more bamboo above it.
bamboo_leaf_size	`0x2` `0x4`	`no_leaves`	`no_leaves` `small_leaves` `large_leaves`	`0` `1` `2`	The size of the leaves on this bamboo block.
bamboo_stalk_thickness	`0x1`	`thin`	`thin` `thick`	`0` `1`	The thickness of the bamboo, if this is thick the bamboo appears thicker.

Bamboo Sapling:

Name	Metadata Bits	Default value	Allowed values	Values for Metadata Bits	Description
age_bit	`0x1`	`false`	`false` `true`	`0` `1`	Specifies the sapling's growth stage.
sapling_type	Not Supported	`oak`	`acacia` `birch` `dark_oak` `jungle` `oak` `spruce`	`Unsupported`	Unused.