Paulownia tomentosa PRINCESS TREE (50 seeds)

Empress Tree, Foxglove tree also known as Princess Tree or Paulownia tomentosa in Latin, is a fascinating and very hardy tree belonging to the Scrophulariaceae family. It is native to northern China, Japan, and Korea. This majestic tree grows extremely fast and can reach a maximum height of 20 meters. It is often described as a "super tree" due to its exceptional growth rate and multiple uses. It is distinguished by its large, lush, and fragrant foliage.

The heart-shaped leaves can reach up to 40 cm in length and 30 cm in width. They are a brilliant green and have a soft texture, sometimes slightly pubescent (fuzzy) on the underside. This abundance of leaves allows the Paulownia to provide pleasant shade, making it a popular tree for public spaces and gardens. Its flowering is spectacular and eye-catching.

Large bell-shaped flowers, ranging from pale violet to blue, appear in spring before the leaves emerge. They are grouped in cluster-like inflorescences, creating a striking contrast with the green foliage.

Each flower measures about 5 to 7 cm in length and has a sweet, pleasant scent reminiscent of violets, attracting many pollinators such as bees and butterflies. The flowering period lasts for several weeks.

The fruits are sticky, pod-shaped capsules that form after flowering. These brownish capsules measure about 3 to 5 cm in length and open at maturity, releasing the seeds.

Empress tree seeds are tiny, white, flat, light, and winged, allowing them to be easily dispersed by the wind.

- Uses:

A Majestic and Ornamental Flowering

The Paulownia is primarily cultivated for the spectacular beauty of its spring blooms, offering clusters of mauve flowers with a delicate fragrance.
Its proud stature and rapid development make it a majestic tree, ideal for creating an impressive focal point in large gardens or landscaped parks.

Exceptional Wood and Ecological Virtues

Renowned for its lightness combined with remarkable strength, its wood is a top-tier material for marquetry, fine construction, and the manufacturing of high-end furniture.
In addition to this economic value, its large leaves capture significant amounts of carbon and serve as nutritious fodder for livestock, while naturally enriching soil quality.

Versatility and the Art of Bonsai

Thanks to its vigorous growth and the graphic structure of its branches, this tree is exceptionally well-suited for creating unique bonsai.
This versatility allows botanical enthusiasts to enjoy its exotic aesthetic both in open ground and through the art of plant miniaturization.

- Germination and Sowing:

• It is highly recommended to sow Paulownia tomentosa at the beginning of March while the weather is still cold.
• Stratification of the seeds is mandatory before sowing, either naturally by leaving them outside in the cold for a few weeks, or artificially by placing them in the refrigerator for 4 to 6 weeks.
• Sow in a tray of fine potting soil, trying to space them at least 2 cm apart.
• Cover the seeds with only 1 to 2 millimeters of substrate.
• Water gently with a sprayer.
• Place the tray in a greenhouse at a temperature of 25°C.
• Germination can take between 2 and 4 weeks depending on the temperature.

- Substrate / Soil Type:

This tree grows very well in a well-drained substrate rich in organic matter. It can adapt to various soil types—clay, sandy, or loamy—as long as they are not too compact. Good soil aeration is essential for optimal root development.

- Exposure / Sunlight:

This species enjoys sunny exposures. A location in full sun promotes rapid growth and abundant flowering. It can tolerate light shade, but insufficient light may hinder its development.

- Temperature / Hardiness:

It is very hardy and can withstand temperatures as low as -20°C. However, it prefers a temperate climate and does not handle late frosts well, especially during its relatively early growth and flowering period.

- Watering / Water Needs:

Its water needs are moderate. It is important to water regularly during the first few years to establish a strong root system. Once well-established, it is more drought-tolerant, but watering during dry spells can promote better growth.

- Reproduction / Multiplication:

It reproduces mainly by seed or by cuttings. Propagation through suckers is also possible.

- Pests / Predators:

While generally resistant, it can be attacked by certain pests such as aphids in early spring. Fungal diseases can also affect the tree in humid conditions.

This article was written by Julien on 07/11/2026.