A conclusion from several studies confirms that illumination of trees and plants at dark hours disrupts their circadian rhythm and increasing light levels in urban landscapes contribute significantly to light pollution. Such practises have led to us losing the experience of darkness and of viewing a sky full of stars. This thesis explores the conceptualisation and visualisation of an alternative typology in illumination of trees in urban parks. A new concept is proposed after observing and understanding of existing lighting practises on trees and its effect on their growth cycle. The proposed illumination strategy uses different spectrums from daylight that are beneficial for leaves to conduct the process of photosynthesis which can lead to improvement in their growth. The use of red light (500-600 nm), Blue light (400-500 nm) and UV light (100-400 nm) in specific quantities can help in improvement in growth of trees. This light recipe is used artistically to create an experiential landscape with the intention to encourage urban inhabitants to interact with their natural surroundings at dark hours and to provide a lighting strategy that is beneficial to trees and minimizes light pollution.
The design is validated with a user experience test, that allows us to understand the acceptability and adaptability of urban inhabitants to a volumetric lighting strategy in urban public parks. Most of the users support the proposed design, encouraging the vision of luminous volumes as a source of illumination in urban landscapes.