Some outdoor plants that are known to purify the air include the Areca Palm (Chrysalidocarpus lutescens), Lady Palm (Rhapis excelsa), Bamboo Palm (Chamaedorea seifrizii), Rubber Plant (Ficus robusta), English Ivy (Hedera helix), Dwarf Date Palm (Phoenix roebelenii), and Boston Fern (Nephrolepis exaltata). These plants have the ability to remove toxins such as formaldehyde, benzene, and trichloroethylene from the air, thus improving the air quality in their surroundings.
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One specific plant that is often mentioned for its oxygen-giving capabilities is the peepal tree. This tree, also known as the bo or bodhi tree, belongs to the same genus as neem trees and is native to India, Myanmar, and Sri Lanka. It can grow up to 15 meters tall and has grey bark on its branches. The peepal tree is said to release oxygen continuously, even at night, which is why it is sometimes referred to as a 24-hour oxygen provider.
However, it is worth noting that while plants do release oxygen as part of their natural process of photosynthesis, the oxygen they provide is not significant enough to noticeably impact the air quality of an entire room or space. Oxygen levels primarily rely on the overall ventilation and air circulation in an area.
Therefore, while having air-purifying plants such as the ones mentioned is beneficial and can contribute to a healthier indoor environment, it is important to ensure proper ventilation and air circulation to maintain good air quality.