Plants and trees make excellent sound barriers, effectively absorbing, reflecting and scattering sound waves. They are far cheaper and more attractive than solid barriers. Plants help control air pollution. Roadside windbreak plantings in town help reduce the amount of lead inhaled and in the countryside reduce the amount of lead reaching arable land. Other pollutants are also filtered out of the air as the plant 'breathes'.
Plants produce life-giving oxygen.
A single mature beech tree produces enough oxygen for ten people every year. An 18-hole golf course can supply enough oxygen for a town of over 6000 people. Plants provide a haven for wildlife. Even an average garden will contain over 150 types of plants which support insects and birds. Plants reduce energy consumption.