As you known, Trees release oxygen and big leafy trees like Peepal, Banyan and Arjuna release more oxygen. Here is the list of some of the well known oxygen producing trees in India, sacred and fruitful.
Bael tree is a source of herbs along with medicinal values from its fruit, leaves, flowers and root. The three-leafed leaf tree is the crown of lord Shiva, found everywhere in India and gives oxygen and purifies the air all the time.
Banyan tree is the national tree of India, absorb CO2 and release oxygen. The Great Banyan found in Kolkata is the largest banyan tree in the world along with Thimmamma Marrimanu and Dodda Aalada Mara.
Peepal tree is also known as ashwattha tree has religious significance in all three major religions that originated on the Indian subcontinent, Hinduism, Buddhism and Jainism. The sacred fig is also the state tree of Odisha and Haryana, also used in traditional medicine for asthma, diabetes, diarrhea and other disorders.
Indian lilac or neem tree is native to the Indian subcontinent from the the mahogany family Meliaceae. Neem tree fruits and seeds are the source of neem oil and its leaves, stems and bark are used in the traditional medicine of India for centuries also flowers of neem tree are used as a vegetable.
Arjun tree commonly known as arjuna found across the Indian Subcontinent, mostly around dry river beds or growing on river banks. The arjuna tree nickname as “Guardian of the heart” and leaves are fed by tasar silkworm and produces the tassar silk.
Jamun or black plum tree is native to the Indian Subcontinent, Leaves are sacred and used in marriage pandal decorations in India. Indian black plums are sweet or slightly acidic flavor and are eaten by humans as well as various native birds and animals.
Ashoka tree is also considered as a sacred tree in Hinduism and flower of Ashoka tree is the state flower of Odisha. Saraca asoca is a rain-forest tree known for its handsome appearance and red color flowers, found in palace compounds and gardens, temples throughout India as well as in Nepal and Sri Lanka.
Audumbara tree known as gular in local is a fast-growing tree and also considered very sacred in Hinduism. The cluster fig tree associated with Lord Dattatreya and its bark are used as a home remedy in India, fruits are a favourite staple of the common Indian macaque.
Curry tree also sometimes called sweet neem or curry leaves tree, leaves are used in many popular dishes of the Indian subcontinent. The tree is native to the Indian subcontinent, produces small white flowers and its berry pulp is edible, with a sweet flavor.
Amla or amalaki tree best known for edible fruit, All the parts of the Amla tree are used in Ayurvedic Indian medicine and also herbal preparations. Indian gooseberry fruits are primary ingredient in rasayana called Chyawanprash and Triphala (Amla, Harad and Bahera).