This building is green in summer and red in autumn. It makes a useful contribution to re-balancing the carbon cycle, by absorbing CO2. Undesirable particulates (dust!) stick to leaves and are swept up in autumn. The leaves shield the building from undue solar gain in summer. Traffic noise is absorbed. Birds and insects find habitats amongst the vegetation. It is a beautiful building (Point House facing Blackheath in South London). Why can’t we have more facades treated like this? Call them vertical gardens if it would help. Co-ordinated planting on discordant buildings would harmonize argumentative buildings.