American Mountain Ash vs Empress Tree - TreeTime.ca

American Mountain Ash vs Empress Tree

Paulownia tomentosa

Sorbus americana

COMING SOON

(new stock expected: fall of 2025)

COMING SOON

(new stock expected: fall of 2025)

Empress Tree
American Mountain Ash

The Empress Tree is a fast growing, ornamental shade tree. It has purple, fragrant flowers that are quite attractive. The flowers emerge before the leaves in early spring. The leaves of this tree can grow very large, up to 30 cm long.

As one of the fastest growing trees in the world, this tree has been given considerable attention for carbon sequestration projects. It drops many seeds which can make it invasive in warmer climates. Please do some research and plant the right tree in the right place.

The Empress tree’s genus name comes from Princess Paulowna, daughter of Tsar Paul I of Russia.

American Mountain ash is a beautiful, medium-sized ornamental tree that is ideal for residential lots. Mountain Ash blooms with tiny white flowers in the spring, followed by clusters of small red/orange berries in the summer.

American Mountain Ash's berries stay on the tree throughout the winter. This attracts birds and other small wildlife to your landscape as the berries are an important food source during the winter months.

Empress Tree Quick Facts

American Mountain Ash Quick Facts

Zone: 5a
Zone: 2a
Height: 9 m (30 ft)
Height: 10 m (32 ft)
Spread: 9 m (30 ft)
Spread: 6 m (20 ft)
Light: full sun
Light: full sun
Moisture: normal
Moisture: dry, normal
Growth rate: very fast
Growth rate: medium
Life span: medium
Life span: medium
Suckering: medium
Suckering: none


Fall colour: scarlet red
Flowers: light purple
Flowers: white clusters, spring
Berries: bunches of orange-red
Seeds: seeds contained within the berries
Hybrid: no
Hybrid: no
Catkins: no
Catkins: no


Other Names: chinese empress tree, foxglove tree, princess tree, royal paulownia
Other Names: dogberry