Quercus macrocarpa Also known as: Bur Oak The hardiest of the oaks, this North American native shade tree is singularly majestic, with its picturesque wide-spreading habit of growth and gnarled branches, best for larger landscapes; extremely tough and adaptable but relatively slow growing, plant for future generations Pyramidal when young, maturing to a broad, spreading, rounded crown. Twigs are sometimes ridged with corky 'wings' Dark green leaves are leathery with deep round lobes. Insignificant flowers (catkins) are followed by oval acorns. Fall colours are pale yellow to brown. ZONE:3 HEIGHT:18-22 m SPREAD:13-18 m Photo: Courtesy of NVK Nurseries