There are hundreds of plants to put a smile on your face. But, there are a select few that have shown to really make you grin.
In 2013, I conducted an experiment at the Chelsea Flower Show. Using facial recognition cameras, I monitored visitor’s facial expressions when shown images of various plants.
Over 30,000 people gave it a go, and the cameras tracked eye movement, expression and engagement to identify the plants that received the most attention.