Tree · Paulowniaceae family
Princess tree
Paulownia tomentosa
In short a 10-second read
in the wild up to 49.2 ft
spacing 19 ft 8¼ in
Where to plant and how much to water
Sun, soil and water.
It grows best in full sun, in average soil.
Sun
Soil
Watering
Frost
How much space it takes
Mature size.
The mature plant next to a person (69 in).
Plant 19 ft 8¼ in apart.
Reaches maturity in about 8–10 years. The final size depends on the cultivar and the spot — we give the range from smallest to largest.
Calendar
Through the year.
Typical for a temperate climate (four seasons). The line shows the current month.
The year at a glance
Flowers
April–May · purple
Planting
container plant: March–April, October–November; bare-root: March–April, October–November; root-balled: March–April, October–November
Feeding
May–June
Feeding
Nutrition.
up to 0.18 oz/sq ft a year, if the soil needs it · May–June
Pests and diseases
Common problems and what to do.
The most common problems in Central Europe. Protection is listed from the gentlest option.
No serious pests or diseases
The source lists no significant problems.
Sources (1)
Frequently asked
Quick answers.
When does princess tree flower?
In April–May; the flowers are purple.
Does princess tree tolerate shade?
No, it needs full sun.
How much space does princess tree need?
At maturity 19 ft 8¼ in–39.4 ft wide and 32.8 ft–49.2 ft tall; recommended spacing 19 ft 8¼ in.
Sources (16) Checked 24 October 2026
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Uses