Royal Empress Tree Seeds

Royal Empress Tree Seeds

(Paulownia tomentosa)

Paulownia tomentosa, commonly known as the Royal Empress tree, princess tree, or foxglove tree, is a fast-growing deciduous tree native to central and western China. It belongs to the family Paulowniaceae and is admired for its large, heart-shaped leaves and spectacular clusters of fragrant, trumpet-shaped lavender to violet flowers that appear in spring before the leaves emerge. These blooms give the tree an ornamental appeal, making it popular in gardens, parks, and streetscapes. The empress tree’s rapid growth rate, combined with its ability to tolerate poor soils, makes it an adaptable species, though in some areas it is considered invasive due to its prolific seed production.

The tree typically grows 30 to 50 feet tall, with a broad, spreading crown. Its leaves can reach up to a foot in length and width, creating dense shade during summer. Paulownia tomentosa is notable for its lightweight yet strong wood, which is used in furniture-making, musical instruments, and crafts, especially in East Asia. In addition to its ornamental and timber value, the tree has been studied for its potential in reforestation, erosion control, and carbon sequestration projects. However, in regions where it spreads aggressively, management and control are recommended to protect native plant communities.

Zones: 5 to 8

Germination Range: 40-60%

Stratification Requirement: Sow under glass. Light is necessary for germination.

Planting Instructions:

1. Choose the right growing medium
Use a fine, well-draining mix such as:

50% peat moss or coco coir

50% perlite or seed-starting mix
Avoid heavy garden soil, as it can suffocate the seeds.

2. Planting depth
Paulownia seeds need light to germinate, so do not bury them. Instead, gently press them onto the surface of the moistened soil so they make contact without being covered.

3. Provide moisture and humidity
Mist the surface with water so it’s evenly moist but not soggy.
Cover the container with a clear plastic dome or plastic wrap to maintain high humidity.

4. Light and temperature
Place the container in bright, indirect light (or under a grow light).
Keep the temperature around 68–77°F (20–25°C) for best germination.

5. Germination time
Seeds usually sprout within 2–4 weeks, sometimes sooner. Keep humidity high and light consistent during this period.

6. Transplanting seedlings
Once seedlings have 2–4 true leaves, gently transplant them into individual pots with well-draining soil.
Avoid overwatering — Paulownia dislikes soggy roots at any stage.

7. Moving outdoors
Harden seedlings by gradually introducing them to outdoor conditions over 1–2 weeks. Plant outside after all danger of frost has passed, in full sun and well-drained soil.