ZONE:
4
COLOUR:
Lime-green
HEIGHT:
18-20 m
SPREAD:
16-18 m
ZONE:
4
COLOUR:
Lime-green
HEIGHT:
18-20 m
SPREAD:
16-18 m
Ailanthus will tolerate heavy urban pollution and adverse conditions, including dry, rocky soils with ranges of pH.
Invasive in Ontario and much of the USA, having been introduced from Asia in 1748.
Ailanthus are dioecious: there are male or female plants, rarely male AND female. The leaves, stems and especially the male flowers have an offensive odour. They are also allelopathic: producing herbicides that limit the growth of other plants around them.