Few people react adversely to the calming presence of tropical foliage indoors.
There is a quality of benign serenity to a green leafy plant near a window or sitting in its pot unobtrusively in a corner of the living room. Psychological studies have shown, in fact, that the presence of indoor plants in homes and offices tends to improve human relationships and even worker productivity. Most begin to look ratty within weeks. In response to the problem of caring for indoor plants, many firms market plastic or silk replicas of popular foliage plants. Silks and plastics just don't do the job for people.