Common name: Silver Maple.
Native: Eastern North America.
Size and spread (10 years): 6m x 3m
Treatment required: Not dormant.
Germinal seeds / kg: 4000
Ideal sowing period: Seed only supplied fresh in June / July when it must be sown immediately.
Soil conditions: Tolerant of droughty soils.
Mature height: 20m+
pic courtesy of Dominicus Johannes Bergsma, CC BY-SA 4.0 via Wikimedia Commons