After planting a tree, how long does it take for it to produce oxygen?

Question

just wanna know

Answer 1

If a tree has green leaves it's making oxygen.

Answer 2

Oxygen is a product of photosynthesis, so as soon as the tree has green on it it is producing oxygen.  You should know though that at night all plants use oxygen instead of making it because at night they are not photosynthesizing.  And FYI, all plants make oxygen, not just trees.

Answer 3

If you have green leaves, then it will start producing O2 immediately.

Green plants produce O2. Even small ones. Once a seedling opens up, it starts producing O2.

We aren't talking about enough O2 to fill a room, but it uses CO2 and changes it to O2 through a process called photosynthesis. But you probably knew that....