Common name: Norway Maple.
Size and spread (10 years): 9m x 3m
Treatment required: Mildly dormant requires 12 weeks of treatment.
Seed / kg: c. 7600; 71% viable
Ideal sowing period: Spring
Soil conditions: Excellent on all soils including chalk but not in waterlogged conditions.
Planting instructions: plant in sun for the best autumn colour
Mature height: 20m +
pic courtesy of Martin Bobka (= Martin120), CC BY-SA 2.5 , via Wikimedia Commons