Old Growth Birch Forest

Old Growth Birch Forest
Structures	Abandoned Camp; Trail Ruins
Features	Birch; Super Birch; Birch with Bee Nest; Super Birch with Bee Nest
Blocks	Grass Block; Bush; Wildflowers; Rose Bush; Lilac; Peony; Lily of the Valley
Climate
Temperature	0.6
Downfall	0.6
Precipitation	Yes
Colors
Grass color	; #88BB67
Foliage color	; #6BA941
Dry foliage color	; #A37246
Water color	; #3F76E4‌[JE only]; ; #44AFF5‌[BE only]
Vibrant Visuals
Atmospherics	Default
Lighting	Default
Volumetric fog	Default
Color grading	Default

An old growth birch forest or birch forest mutated is a variant of the birch forest, notable for its trees, which are taller than those found in the normal birch forest.

Generation

Like regular birch forests, old growth birch forests generate in temperate regions with moderately high humidities. However, old growth birch forests usually generate where weirdness is positive, so a river will often separate it from a regular birch forest, though they may also share a border directly. Old growth birch forests frequently border forests, dark forests, taigas, and sparse jungles.

Lush caves may generate beneath old growth birch forests due to their relatively high humidity. Dripstone caves sometimes generate inland, with the deep dark possible where erosion is low, most often beneath slopes and near mountain peak biomes.

Description

The old growth birch forest features birch trees, half of which are significantly taller than normal with trunks up to 14 blocks tall. These tall birch trees are exclusive to the old growth birch forest and cannot be grown with a normal birch sapling. Bee nests can be found on 0.2%‌^{[JE only]} or 0.035%‌^{[BE only]} of the trees. Fallen trees can also be up to 14 blocks long.

Flower patches that naturally generate in the biome include rose bushes, lilacs, peonies, and lilies of the valley, as well as wildflowers covering the ground. Small patches of up to five bushes are also present.

Additionally, trail ruins may generate here as opposed to regular birch forests. Abandoned camps sometimes generate in old growth birch forests.

Mobs

The following mobs naturally spawn here:

In **Java Edition**
Mob	Spawn weight	Group size
Monster category
Creeper	¹⁰⁰⁄₅₁₅	4
Skeleton	¹⁰⁰⁄₅₁₅	4
Slime^{[note 1]}	¹⁰⁰⁄₅₁₅	4
Spider	¹⁰⁰⁄₅₁₅	4
Zombie	⁹⁵⁄₅₁₅	4
Enderman	¹⁰⁄₅₁₅	1–4
Witch	⁵⁄₅₁₅	1
Zombie Villager	⁵⁄₅₁₅	1
Creature category
Sheep	¹²⁄₄₀	4
Chicken	¹⁰⁄₄₀	4
Pig	¹⁰⁄₄₀	4
Cow	⁸⁄₄₀	4
Underground water creature category
Glow Squid	1	4–6
Ambient category
Bat	1	8

↑ Spawn attempt succeeds only in slime chunks.

In **Bedrock Edition**
Mob	Spawn weight	Group size
Monster category
Creeper	100	1
Slime^{[note 1]}	100	1
Spider	100	1
Zombie	95	2–4
Skeleton	80	1–2
Enderman	10	1–2
Witch	5	1
Zombie Villager	5	2–4
Creature category
Sheep	12	2–3
Chicken	10	2–4
Glow Squid	10	2–4
Pig	10	1–3
Cow	8	2–3
Ambient category
Bat	1	8

↑ Spawn attempt succeeds only in slime chunks.

Sounds

Music

These music tracks play while the player is in the old growth birch forest.

Title	Preview	Java Edition		Bedrock Edition
Title	Preview	Weight	Probability	Weight	Probability
Memories		2	8%	2	8%
Shores		2	8%	2	8%
Aerie		1	4%	1	4%
Broken Clocks		1	4%	1	4%
Bromeliad		1	4%	1	4%
Clark		1	4%	1	4%
Comforting Memories		1	4%	1	4%
Danny		1	4%	1	4%
Dry Hands		1	4%	1	4%
Firebugs		1	4%	1	4%
Floating Dream		1	4%	1	4%
Haggstrom		1	4%	1	4%
Key		1	4%	1	4%
Labyrinthine		1	4%	1	4%
Left to Bloom		1	4%	1	4%
Living Mice		1	4%	1	4%
Mice on Venus		1	4%	1	4%
Minecraft		1	4%	1	4%
One More Day		1	4%	1	4%
Oxygène		1	4%	1	4%
Subwoofer Lullaby		1	4%	1	4%
Sweden		1	4%	1	4%
Wet Hands		1	4%	1	4%

Data values

ID

Java Edition:

Name	Identifier	Translation key
Old Growth Birch Forest	`old_growth_birch_forest`	`biome.minecraft.old_growth_birch_forest`

Bedrock Edition:

Name	Identifier	Numeric ID
[No displayed name]	`birch_forest_mutated`	`155`

Biome definition

This section is a work in progress.

Anyone is encouraged to edit this page and add more content into the topic.
Additional note: To be converted to standard JSON tree view - see Forum:Include enchantment, biome and dimension definitions in the Data values section for project info

Press "show" to display json contents

{
  "attributes": {
    "minecraft:audio/background_music": {
      "default": {
        "max_delay": 24000,
        "min_delay": 12000,
        "sound": "minecraft:music.overworld.forest"
      }
    },
    "minecraft:gameplay/natural_mob_spawns": {
      "argument": {
        "spawn_costs": {},
        "spawns_by_category": {
          "ambient": [
            {
              "type": "minecraft:bat",
              "count": 8,
              "weight": 10
            }
          ],
          "creature": [
            {
              "type": "minecraft:sheep",
              "count": 4,
              "weight": 12
            },
            {
              "type": "minecraft:pig",
              "count": 4,
              "weight": 10
            },
            {
              "type": "minecraft:chicken",
              "count": 4,
              "weight": 10
            },
            {
              "type": "minecraft:cow",
              "count": 4,
              "weight": 8
            }
          ],
          "monster": [
            {
              "type": "minecraft:spider",
              "count": 4,
              "weight": 100
            },
            {
              "type": "minecraft:zombie",
              "count": 4,
              "weight": 95
            },
            {
              "type": "minecraft:zombie_villager",
              "count": 1,
              "weight": 5
            },
            {
              "type": "minecraft:skeleton",
              "count": 4,
              "weight": 100
            },
            {
              "type": "minecraft:creeper",
              "count": 4,
              "weight": 100
            },
            {
              "type": "minecraft:slime",
              "count": 4,
              "weight": 100
            },
            {
              "type": "minecraft:enderman",
              "count": {
                "type": "minecraft:uniform",
                "max_inclusive": 4,
                "min_inclusive": 1
              },
              "weight": 10
            },
            {
              "type": "minecraft:witch",
              "count": 1,
              "weight": 5
            }
          ],
          "underground_water_creature": [
            {
              "type": "minecraft:glow_squid",
              "count": {
                "type": "minecraft:uniform",
                "max_inclusive": 6,
                "min_inclusive": 4
              },
              "weight": 10
            }
          ]
        }
      },
      "modifier": "overlay"
    },
    "minecraft:visual/sky_color": "#7aa5ff"
  },
  "carvers": [
    "minecraft:cave",
    "minecraft:cave_extra_underground",
    "minecraft:canyon"
  ],
  "downfall": 0.6,
  "effects": {
    "water_color": "#3f76e4"
  },
  "features": [
    [],
    [
      "minecraft:lake_lava_underground",
      "minecraft:lake_lava_surface"
    ],
    [
      "minecraft:amethyst_geode"
    ],
    [
      "minecraft:monster_room",
      "minecraft:monster_room_deep"
    ],
    [],
    [],
    [
      "minecraft:ore_dirt",
      "minecraft:ore_gravel",
      "minecraft:ore_granite_upper",
      "minecraft:ore_granite_lower",
      "minecraft:ore_diorite_upper",
      "minecraft:ore_diorite_lower",
      "minecraft:ore_andesite_upper",
      "minecraft:ore_andesite_lower",
      "minecraft:ore_tuff",
      "minecraft:ore_coal_upper",
      "minecraft:ore_coal_lower",
      "minecraft:ore_iron_upper",
      "minecraft:ore_iron_middle",
      "minecraft:ore_iron_small",
      "minecraft:ore_gold",
      "minecraft:ore_gold_lower",
      "minecraft:ore_redstone",
      "minecraft:ore_redstone_lower",
      "minecraft:ore_diamond",
      "minecraft:ore_diamond_medium",
      "minecraft:ore_diamond_large",
      "minecraft:ore_diamond_buried",
      "minecraft:ore_lapis",
      "minecraft:ore_lapis_buried",
      "minecraft:ore_copper",
      "minecraft:underwater_magma",
      "minecraft:disk_sand",
      "minecraft:disk_clay",
      "minecraft:disk_gravel"
    ],
    [],
    [
      "minecraft:spring_water",
      "minecraft:spring_lava"
    ],
    [
      "minecraft:glow_lichen",
      "minecraft:forest_flowers",
      "minecraft:wildflowers_birch_forest",
      "minecraft:birch_tall",
      "minecraft:patch_bush",
      "minecraft:flower_default",
      "minecraft:patch_grass_forest",
      "minecraft:brown_mushroom_normal",
      "minecraft:red_mushroom_normal",
      "minecraft:patch_pumpkin",
      "minecraft:patch_sugar_cane",
      "minecraft:patch_firefly_bush_near_water"
    ],
    [
      "minecraft:freeze_top_layer"
    ]
  ],
  "has_precipitation": true,
  "temperature": 0.6
}

Achievements


Icon		Achievement	In-game description	Actual requirements (if different)	Gamerscore earned	Trophy type (PS)
PS4	Other	Achievement	In-game description	Actual requirements (if different)	Gamerscore earned	Trophy type (PS)
		Adventuring Time	Discover 17 biomes.	Visit any 17 biomes. Does not have to be in a single world.	40	Silver

Advancements

Icon	Advancement	In-game description	Actual requirements (if different)
	Adventuring Time	Discover every biome	Visit all of these 56^{[until: Fourth Drop 2026]}/57^[upcoming] biomes: Badlands Bamboo Jungle Beach Birch Forest Cherry Grove Cold Ocean Dappled Forest Dark Forest Deep Cold Ocean Deep Dark Deep Frozen Ocean Deep Lukewarm Ocean Deep Ocean Desert Dripstone Caves Eroded Badlands Flower Forest Forest Frozen Ocean Frozen Peaks Frozen River Grove Ice Caves Ice Spikes Jagged Peaks Jungle Lukewarm Ocean Lush Caves Mangrove Swamp Meadow Mushroom Fields Ocean Old Growth Birch Forest Old Growth Pine Taiga Old Growth Spruce Taiga Pale Garden Plains River Savanna Savanna Plateau Snowy Beach Snowy Plains Snowy Slopes Snowy Taiga Sparse Jungle Stony Peaks Stony Shore Sunflower Plains Sulfur Caves Swamp Taiga Warm Ocean Windswept Forest Windswept Gravelly Hills Windswept Hills Windswept Savanna Wooded Badlands The advancement is only for Overworld biomes. Other biomes may also be visited, but are ignored for this advancement.

History

Java Edition

Java Edition
1.7.2	13w36a	Added birch forest M, along with its variant and many other biomes.
1.9	16w02a	Birch forest M no longer generates due to MC-95612.
1.11	16w43a	Birch forest M generates once again.
1.13	18w16a	"Birch Forest M" has been renamed to "Mutated Birch Forest".
	pre5	The ID has been changed from `mutated_birch_forest` to `tall_birch_forest`.
	18w19a	"Mutated Birch Forest" has been renamed to "Tall Birch Forest".
1.18	Experimental Snapshot 1	Due to changes to the world generation algorithm, tall birch forests are now much more common.
	21w37a	Prior to the removal of numerical biome IDs, this biome's numerical ID was 155.
	21w40a	"Tall Birch Forest" has been renamed to "Old Growth Birch Forest".
	21w40a	The ID `tall_birch_forest` has been changed to `old_growth_birch_forest`.
	21w44a	Old growth birch forest is now required for the "Adventuring Time" advancement.
1.20	23w12a	Added trail ruins, which can generate in old growth birch forests.
1.20	23w17a	"A Familiar Room" can now be played in old growth birch forests.
1.21.5	25w02a	Added wildflowers, which can generate in old growth birch forests.
1.21.5	25w05a	Added bushes, which can generate in old growth birch forests.
26.3	snap1	Added abandoned camps, which can generate in old growth birch forests.

Bedrock Edition

Pocket Edition Alpha
v0.11.0	build 1	Added Birch Forest M.
Bedrock Edition
1.9.0	beta 1.9.0.0	Added lilies of the valley, which can be found in birch forests.
1.16.0	beta 1.16.0.57	Bee nests now have a small chance to generate in old growth birch forest biome.
1.19.40	Preview 1.19.40.20	The old growth birch forest now has a temperature of 0.6 instead of 0.7, and a downfall value of 0.6 instead of 0.8.
1.19.40	Preview 1.19.40.20	Old growth birch forests now uses the same grass color as Java Edition.^[1]^{[more information needed]}
?	?	Changed the water color from #0A74C4 to the default.^{[more information needed]}
1.21.70 Experiment Drop 1 2025	Preview 1.21.70.20	Added wildflowers, which can generate in old growth birch forests.
1.21.70 Experiment Drop 1 2025	Preview 1.21.70.20	Added bushes, which can generate in old growth birch forests.
26.40 Experiment Drop 3 of 2026	Preview 26.40.27	Added abandoned camps, which can generate in old growth birch forests.
26.50	Preview 26.50.22	All features from the "Drop 3 of 2026" experiment have been fully implemented.

Legacy Console Edition

Legacy Console Edition
Xbox 360	Xbox One	PS3	PS4	PS Vita	Wii U	Switch
TU31	CU19	1.22	1.22	1.22	Patch 3	1.0.1	Added the birch forest M biome, along with many other biomes.

New Nintendo 3DS Edition

This section of the article is empty.

You can help by expanding it.
Additional note: Please confirm whether birch forest M exist on 3DS edition (3DS edition is supposed to be similar to MCPE v1.1 release, which has birch forest m).

Issues

Issues relating to "Old Growth Birch Forest" or "Birch Forest Mutated" are maintained on the bug tracker. Issues should be reported and viewed there.

Gallery

Screenshots

Overview of an old growth birch forest
An abandoned camp in an old growth birch forest
An old growth birch forest single biome world

Historical screenshots

A tall birch forest single biome world before 1.18
A tall birch forest with ray tracing

Concept artwork

Birch forest concept art

References

↑ MCPE-34936 – Tall birch tree, shattered savanna, badlands plateau, and dark forest biomes have wrong grass color – resolved as "Fixed".

[Slime-1] Spawn attempt succeeds only in slime chunks.

[Slime-2] Spawn attempt succeeds only in slime chunks.

[3] MCPE-34936 – Tall birch tree, shattered savanna, badlands plateau, and dark forest biomes have wrong grass color – resolved as "Fixed".

[note 1]

[note 1]

[1]

Old Growth Birch Forest

Contents

Generation

Description

Mobs

Sounds

Music

Data values

ID

Biome definition

Achievements

Advancements

History

Java Edition

Bedrock Edition

Legacy Console Edition

New Nintendo 3DS Edition

Issues

Gallery

Screenshots

Historical screenshots

Concept artwork

See also

References

Navigation

Navigation menu

Climate
Structures	Abandoned Camp Trail Ruins
Features	Birch Super Birch Birch with Bee Nest Super Birch with Bee Nest
Blocks	Grass Block Bush Wildflowers Rose Bush Lilac Peony Lily of the Valley
Temperature	0.6
Downfall	0.6
Precipitation	Yes
Colors
Grass color	#88BB67
Foliage color	#6BA941
Dry foliage color	#A37246
Water color	#3F76E4‌^{[JE only]} #44AFF5‌^{[BE only]}
Vibrant Visuals
Atmospherics	Default
Lighting	Default
Volumetric fog	Default
Color grading	Default