Philippe Clement / Silver / Creek / River maple (Acer saccharinum) leaf in autumn colours, native to eastern North America

Philippe Clement / Japanese maple leaves (Acer palmatum) in autumn colours, native to Japan and Korea

Philippe Clement / Paper / American white / Canoe birch (Betula papyrifera) leaves in autumn colours showing colour change, native to northern North America

Philippe Clement / Horse chestnut (Aesculus hippocastanum) leaves in autumn colours, Belgium

Philippe Clement / Silver / Creek / River maple (Acer saccharinum) leaf in autumn colours, native to eastern North America

Philippe Clement / Highbush / Swamp blueberry (Vaccinium corymbosum) leaves turning colour in autumn, native to North America

Philippe Clement / American Sweetgum / Redgum (Liquidambar styraciflua) leaves in autumn colours, native to North America

Philippe Clement / Close up of a Fern loosing chlorophyll in autumn, Luxemburg