Acer pseudoplatanus ‘Erectum’
(= A. pseudoplatanus ‘Nachtegaalplein’)
Habit: Large tree, 15-20 (25) m tall, 6-8 m wide; initially stiffly columnar; broadly upright after 10 years, gradually compactly ovoid, with straight leader, branches arching upright to acutely angled upwards; fast-growing, 40-60 cm a year, after 10 years 20-30 cm.
Leaves: Large, short-stemmed, pale dark green, somewhat leathery, yellow or greenish yellow in autumn.
Demands: Like A. pseudoplatanus; sensitive to heat and drought; wind resistant.
Hardiness: Zone 4