Go for evergreens One of the most surprising findings is that you don’t need to physically be in nature to benefit. Simply looking at images of nature projected on screens has been shown to improve exercise performance, while a view of trees from a window improved healing times and reduced pain medication in hospital patients. It would be fair to postulate, therefore, that the visual stimulation of greenery alone may be one of the biggest factors at play here. Working on this assumption, I’d include a significant proportion of evergreen species to provide a permanent green backdrop. Also, as I often say, perhaps an even more effective way to do this is with houseplants, which give you year-round green that you are likely to physically be around for greater periods of time.