Princess Tree (Paulownia tomentosa)

Princess Tree

Paulownia tomentosa

Its foxglove-like blooms flood spring with lavender haze, a fast-growing deciduous tree. Common name: Princess Tree, Empress Tree

Full sun
1–2/week
Moderate
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Plant Needs

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Sunlight Full sun to partial shade; tolerates brief drought once established, best with direct sunlight for most of the day
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Watering Water deeply when top 5–10 cm of soil is dry; avoid waterlogging, as it can cause root rot
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Temperature Hardy to -20°C; thrives in temperate to warm climates, tolerates heatwaves and cold snaps
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Characteristics

  • Leaf: Large, heart-shaped, fuzzy green leaves up to 30 cm wide, soft to the touch
  • Flower: Clusters of tubular, lavender-purple blooms with yellow inner markings, fragrant
  • Stem/Bark: Light brown, smooth young bark becoming fissured with age
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Care Guide

Watering

Keep soil consistently moist during active growth to support rapid development

Fertilization

Apply balanced slow-release fertilizer once at bud break. Avoid over-fertilization, as it can promote excessive leaf growth at the expense of blooms

Eggshell powder top-dress:Crush dried eggshells into fine powder; sprinkle 1–2 tbsp around the tree base; water thoroughly to release calcium into the soil
Pruning
  • Remove suckers regularly to prevent invasive spread, as it can self-seed aggressively
  • Thin crowded branches in late winter to improve airflow and light penetration
  • Prune damaged or diseased wood promptly to reduce pest and disease risk
  • Shape young trees in early spring to establish a strong, upright structure
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Toxicity

Warning: this plant may be toxic.

Pets & Humans

Pets: ASPCA: Non-toxic to cats

Humans: No known toxic effects to humans

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Garden Uses & Culture

Culture: Symbolizes prosperity and rapid growth in traditional Chinese culture; planted to mark new beginnings

Usage: Ornamental shade tree; lightweight, durable wood used for furniture, musical instruments, and craftwork