Some people believe it may be harmful because plants may respire as humans do, emitting carbon dioxide at night as a reverse response to photosynthesis, but humans and pets produce more CO2 than plants do. ... Making the answer to this question a resounding yes; plants are great for the bedroom.
Lucky bamboo is said to be an auspicious plant for the home that summons fortune, happiness, and prosperity. The type of Feng Shui lucky bamboo is the species Dracaena sanderiana. Other names for this lucky charm houseplant include Chinese water bamboo, Goddess of Mercy, and Sander's dracaena.
Cactus, bonsai and other thorny plants, with the exception of roses, must be removed immediately from the house as they bring in negative energy. They could have a negative impact on familial ties. It also brings in bad luck.
Although the fact does remain that during the night (most) plants are unable to produce oxygen (due to lack of sunlight to promote photosynthesis), so create carbon dioxide instead. But despite this, many plant and health experts assert that there is very little risk of any serious harm from plants in the bedroom.
Unfortunately, no houseplant rids the air of tobacco smoke. The NASA studies on indoor pollution done in 1989 recommends 15 to 18 plants in 6 to 8-inch- diameter containers to clean the air in an average 1,800 square foot house. That's roughly one plant per 100 square feet of floor space.
Why our elders say that we should not go near plants/trees at night? Plants get their energy for metabolism from cellular respiration, which consumes oxygen and releases carbon dioxide. ... The upshot is that during the day, a plant has a net release of O2 and during the night it has a net consumption of O2.
At night, when photosynthesis can't take place, plants continue to consume oxygen but they don't release any back into the room. ... The amount of oxygen the plants in your bedroom use at night is trivial.