Square Metre for Butterflies: A network of green roofs in Edinburgh

Square Metre for Butterflies: A network of green roofs in Edinburgh

Most butterfly species depend on specific plants for the nourishment of their larvae. In urban areas, the absence of these plants often limits butterfly populations. The Square Metre for Butterflies Project aims to demonstrate the potential of rooftop habitat to support pollinators and other wildlife and to make the case for green roofs on new developments. A collaboration between Butterfly Conservation and Royal Botanic Garden Edinburgh, through the Edinburgh Living Landscape Partnership, the project entailed asking owners of buildings in Edinburgh to plant on their rooftops at least one square metre of each of three wildflowers (Lotus corniculatus, Rumex acetosella and Helianthemum nummularium). These plants are favoured by three butterfly species (Polyommatus icarus, Lycaena phlaeas and Aricia artaxerxes). Planting was undertaken by project partners and building staff.