Lavender, marjoram and ivy have been revealed as the best air-cleaning plants to include on a living wall, according to a new study by the University of Surrey in the UK.
Researchers planted 10 different species on a 1.4 meter-high green wall beside a busy road to see which were most effective in capturing pollutants from the air. Plants help reduce pollution by catching particles on their leaves before rainfall safely washes them down to the ground. By using a mixture of species, the researches were able to see which leaf shapes and plant properties were most effective.
