Empress Tree vs American Bladdernut - TreeTime.ca

Empress Tree vs American Bladdernut

Staphylea trifolia

Paulownia tomentosa

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American Bladdernut
Empress Tree

American Bladdernut is a fast-growing, ornamental shrub native to eastern North America. It can be grown as a large shrub or trained as a small tree. The small, drooping, white flowers are bell-shaped and grow in clusters. They appear in mid to late spring, attracting various pollinators. Well suited as an understory plant as it prefers shady and partial sun location with moist soils.

The blossoms mature into papery seed capsules and have been described as miniature Japanese lanterns. They are commonly used in dried flower arrangements. The seeds found within the pods are edible, and have a taste similar to pistachios. They can be eaten raw, used in baking or made into a sweet cooking oil.

Care should be taken when planting American Bladdernut, as it can spread quickly. It is prone to suckering and will self-seed. Plant the right tree in the right place.

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 Bladdernut Quick Facts

Empress Tree Quick Facts

Zone: 3a
Zone: 5a
Height: 4 m (12 ft)
Height: 9 m (30 ft)
Spread: 5 m (15 ft)
Spread: 9 m (30 ft)
Light: shade, partial shade
Light: full sun
Moisture: normal, wet
Moisture: normal
Growth rate: medium
Growth rate: very fast
Life span: long
Life span: medium
Suckering: medium
Suckering: medium


Flowers: white
Flowers: light purple
Hybrid: no
Hybrid: no
Catkins: no
Catkins: no


Native to: ON, QC
Other Names: chinese empress tree, foxglove tree, princess tree, royal paulownia