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Oxygen Algae

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Oxygen AlgaeO
Carrot Rocket Launcher
This article is about content available solely in the People's Republic of China.

Oxygen Algae
Oxygen Algae allow plants in a 3x3 space around it to be planted underwater.
Almanac statistics
Sun cost 25
Recharge Fast
Toughness Normal
Range 3x3 square
In-game statistics
Unlocked Unknown

Plants vs. Zombies Online
(translation: Oxygen Algae)
Oxygen AlgaeO
Oxygen Algae release oxygen in cross shape around it.
Almanac statistics
Sun cost 50 sun
Recharge Fast
In-game statistics
Unlocked Beating East Sea Dragon Palace - Level 1-1

Oxygen Algae (氧气藻; pinyin: yǎngqì zǎo) is a plant and an environment modifier Plants vs. Zombies Online. It is an aquatic plant, and as such can only be planted underwater. Since most plants cannot be planted underwater, the Oxygen Algae must be used. When planted, the player will be able to plant any other plant in a 3x3 area around it.


Plants vs. Zombies: Great Wall Edition/Journey to the West

Oxygen Algae was obtained in the Underwater World. It provided oxygen in a 3x3 area around itself.

Plants vs. Zombies Online

Initially, Oxygen Algae releases oxygen in a cross shape around it to let land plants survive in the aquatic environment. It has a meter below it with 3 sections, which is used to show the level of Oxygen Algae. The player can click on the Oxygen Algae to level it up by spending some sun.

  • The first level costs 75 sun and makes the oxygen-supplying range become 3x3.
  • The second level costs 125 sun and makes the oxygen-supplying range become a diamond shape.
  • The third level costs 200 sun and makes the oxygen-supplying range become 5x5.

Plant Food effect

Its Plant Food ability is healing.


Plants vs. Zombies: Great Wall Edition

I think I've seen that cloud before.
The content in this section is archived. What it describes is not available anymore.

Plants vs. Zombies Online



  • Algae is actually neither plant, animal, nor fungi. Algae is usually a single-celled organism, however, multi-cellular algae is not unknown to exist.

Specific to Plants vs. Zombies: Journey to the West

I think I've seen that cloud before.
The content in this section is archived. What it describes is not available anymore.
  • It was originally introduced in Plants vs. Zombies: Journey to the West but then moved to the Great Wall Edition due to the deletion of the game.

Specific to Plants vs. Zombies: Great Wall Edition

  • If it got eaten, the player had 5 seconds to plant another Oxygen Algae before all plants in the 3x3 area where it once was drowned.

Specific to Plants vs. Zombies Online

  • It is the first plant in Plants vs. Zombies Online to be upgradeable during the level without help of a seed packet.
    • Ironically, it cannot be upgraded from the Greenhouse.
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Plants vs. Zombies Online
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Far Future Laser Bean · Blover · Citron · E.M.Peach · Tile Turnip · Ganoderma · Banana Tree · Nitration Mushroom · Infi-nut · Magnifying Grass
East Sea Dragon Palace Oxygen Algae · Garlic · Bubble Flower · Electric Anemone · Mine Fruit · Sea Anemone · Litchi · Starfish Fruit
Upgrades Twin Sunflower · Repeater
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Power Ups Cherry Bomb · Jalapeno
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Plants vs. Zombies: Journey to the West
Day Peashooter · Sunflower · Cherry Bomb · Wall-nut · Potato Mine · Snow Pea · Chomper · Repeater
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Fog Sea-shroom · Plantern · Cactus · Three Leaf Clover · Split Pea · Starfruit · Pumpkin · Magnetic Mushroom
Roof Cabbage-pult · Flower Pot · Kernel-pult · Coffee Bean · Garlic · Umbrella Leaf · Marigold · Melon-pult
Dragon's Palace Oxygen Algae · Starfish · Bramble Sea Grass · Water Gun Grass · Electric Anemone
Upgrades Gatling Pea · Twin Sunflower · Gloom-shroom · Cattail · Winter Melon · Gold Magnet · Spikerock · Cob Cannon
Others Imitater · Explode-o-nut · Giant Wall-nut · Vigorous Broccoli · Pomegranate Machine Gun · Carrot Missile Truck · Oak Archer · Ghost Pepper · Laser Bean · Dandelion · Snapdragon · Bonk Choy
Hero Plants Iron Man Nut · Monkey King Peashooter · Pig Squash · General Nut · Monk Flower · Nezha Peashooter

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