MUMBAI, March 2 -- You don't need to be an urban gardener with a YouTube channel to grow potted plants at home. Just pick varieties that require minimum care but offer health gains that range from beating colds to boosting memory. A research conducted by NASA shows that house plants can remove up to 87% of air toxins in a day. And there are already studies that document how they boost concentration, productivity and general health levels. In fact, just gazing at some green can relax you and better your mood. Don't know which plant works best for you? Here's a handy guide....