Biomes O' Plenty Wiki
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Poisonous liquid is a purplish liquid found in small lakes in several biomes. Hunger and poison debuffs affect the player when in contact with poisonous liquid. It can be contained in a bucket.


Poison is found naturally in various swamp biomes. It can be found commonly in Lush Swamps, Bogs, Ominous Forests, and Mystic Groves.

Lush Swamps[]

Poison is commonly found in Lush Swamps as small pools usually 1-2 blocks deep. They can grow sugar cane, river cane (removed), reed, and cattail. They can harbor lily pads.


In Bogs, poison liquid ponds are very common. They are often surrounded with mud.

Ominous Woods[]

In Ominous Woods, occasional poison pools may appear.


Poison pools in Ominous Woods.

Mystic Groves[]

In Mystic Groves, water appears purple, but it is not poison. However, poison pools still generate in Mystic Groves. Water is a more animated and bright purple, while poison will appear murky with faded color.


Water in a Mystic Grove.


Poison in a Mystic Grove.


Purple water in a Mystic Grove.



Liquid flow comparison. Poison, at the bottom, flows 4 blocks.

Poison only flows 4 blocks from its source block. In survival, movement is impeded in poison due to damage taken. However, in creative mode, poison impedes movement as much as water. It is not renewable.

You take half a heart of damage per second when swimming in poison. Due to rapidly getting hurt, you cannot swim as quickly. You get hunger and poison for 5 seconds upon touching poison.

When water or any other liquid flows across poison, the poison disappears and becomes mud. The same is true if poison flows on water. The mud can be broken and drops balls of mud, which can be thrown.

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Dirt & Grass Blocks Spectral MossOvergrown StoneLoamy GrassSandy GrassSilty GrassOrigin GrassMycelial NetherrackOvergrown NetherrackFlowering Grass BlockLoamy Dirt (• Coarse Loamy Dirt) • Sandy Dirt (• Coarse Sandy Dirt) • Silty Dirt (• Coarse Silty Dirt)
Stone & Sand Blocks Dried SandAsh BlockMudMud Bricks (• Mud Bricks StairsMud Bricks Slab) • White Sand (•White Sandstone)
Gem Blocks Celestial CrystalBiome Essence OreEnder Amethyst Ore( • Block of Amethyst) • Ruby Ore • (Block of Ruby) • Peridot Ore( • Block of Peridot) • Topaz Ore( • Block of Topaz) • Tanzanite Ore( • Block of Tanzanite) • Malachite Ore( • Block of Malachite) • Sapphire Ore( • Block of Sapphire) • Amber Ore( • Block of Amber)
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Other Blocks Hardened IceFleshHive BlockHoneycomb Block (• Empty Honeycomb BlockFilled Honeycomb Block) • Honey BlockBramble
Liquids QuicksandHot Spring WaterLiquid BloodLiquid HoneyPoisonous Liquid
Removed Blocks Acacia WoodAltar FrameAsh StoneBone SegmentsCelestial LensCloud BlockCrag RockDried DirtHardened DirtHardened SandJelled PoisonLimestone (• Polished Limestone) • Loftwood WoodPurified DirtPurified GrassRed RockRed Rock CobblestoneSacrificial FocusShale (• Polished Shale) • Siltstone (• Polished Siltstone) • SkystoneSkystone CobblestoneSkystone BricksSmoldering Grass Block