Thanks for your question. It’s hard to say which plant produces the most oxygen because there are so many factors that go into it like how big the plant is, how much water it gets, and the amount of nutrients it gets.

Usually, the largest or fastest-growing plants give off more oxygen than smaller or slower-growing ones. Also, plants that get more light give off a lot of oxygen.

If you’re looking for plants to produce the most oxygen inside the house, there are some plants that can help. The Areca palm not only produces a lot of oxygen, but purifies the air by removing harmful chemicals!

The Snake Plant is another plant that is high in oxygen production during the day and at night! Overall, most of the Earth’s oxygen comes from the tiny ocean plants called phytoplankton that live near the surface of the water and drift with the ocean current.