Royal Paulownia Paulownia tomentosa
Other Common Name(s):
- Phonetic Spelling
- pa-LOH-nee-a toh-men-TOH-suh
- This plant is an invasive species in North Carolina
- Description
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This plant is problematic and alternatives should be considered. Please see the suggestions in the left-hand column.
The Princess Tree is a deciduous tree in the Paulowniaceae family. It is native to eastern Asia and very common in China. The tree is named in honor of Russian Princess Anna Paulowna (1795-1865), and the species name means hairy in Latin. It was introduced in North America around 1844 and has naturalized in the eastern U.S. due to the quantity of seeds that have escaped cultivation.
The tree tolerates a wide range of soils but prefers moist, sandy loam that is high in organic matter and well-drained. Grow in full sun or very light shade. As one of the fastest-growing trees, it can add 15 feet yearly to reach a mature height of 50 feet and a width of 30 feet in 10 years. Hard pruning will encourage larger trees. It is difficult to kill even after fires, cutting and bulldozing because it can sprout from roots spread several feet from the original tree.
Showy spring flowers are profuse and appear before the leaves. The foxglove-like flowers bloom on old wood and are light purple pink, and smell like vanilla. The attractive leaves are large and velvety soft looking similar to a catalpa tree. Woody brown seed capsules break open to reveal large quantities of winged seeds. It is tolerant of air pollution and coastal conditions. The wood is commercially valuable in Japan, but the American species are usually brittle.
This tree is not recommended for landscape planting. The canopy produces dense shade making it difficult to grow plants underneath, and it competes with native plants for nutrients and water.
Insects, Diseases, and Other Plant Problems: Flower buds can suffer frost damage in the early spring. This plant is weedy, messy, has weak wood and is listed as an invasive species by the NC Invasive Plant Council, North Carolina Forest Service, USDA National Invasive Species Information Center; the Invasive Plant Atlas of the United States
- See this plant in the following landscape:
- Cultivars / Varieties:
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- 'Alba'
- 'Alba'
- 'Alba'
- Tags:






































- Cultivars / Varieties:
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- 'Alba'
- 'Alba'
- 'Alba'
- Tags:
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Attributes:
- Genus:
- Paulownia
- Species:
- tomentosa
- Family:
- Paulowniaceae
- Uses (Ethnobotany):
- Used in paper, veneer, hand-carvings, clogs, musical instruments, furniture, rice pots, water pails, bowls, and spoons and has medicinal uses in Asia.
- Life Cycle:
- Woody
- Recommended Propagation Strategy:
- Seed
- Country Or Region Of Origin:
- China
- Edibility:
- Flowers are edible, add them to salad as a colorful garnish.
- Dimensions:
- Height: 30 ft. 0 in. - 50 ft. 0 in.
- Width: 20 ft. 0 in. - 30 ft. 0 in.
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Whole Plant Traits:
- Plant Type:
- Edible
- Tree
- Woody Plant Leaf Characteristics:
- Deciduous
- Habit/Form:
- Dense
- Rounded
- Spreading
- Growth Rate:
- Rapid
- Maintenance:
- High
- Texture:
- Coarse
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Cultural Conditions:
- Light:
- Full sun (6 or more hours of direct sunlight a day)
- Partial Shade (Direct sunlight only part of the day, 2-6 hours)
- Soil Texture:
- Clay
- High Organic Matter
- Loam (Silt)
- Sand
- Shallow Rocky
- Soil pH:
- Acid (<6.0)
- Alkaline (>8.0)
- Neutral (6.0-8.0)
- Soil Drainage:
- Good Drainage
- Moist
- Available Space To Plant:
- 24-60 feet
- NC Region:
- Coastal
- Mountains
- Piedmont
- USDA Plant Hardiness Zone:
- 5a, 5b, 6a, 6b, 7a, 7b, 8a, 8b, 9a, 9b
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Fruit:
- Fruit Color:
- Brown/Copper
- Green
- Display/Harvest Time:
- Fall
- Fruit Type:
- Capsule
- Fruit Length:
- 1-3 inches
- Fruit Description:
- 1"-1.5" long woody oval dehiscent capsule containing thousands of small winged seeds. Immature capsules are sticky green turning brown in the fall.
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Flowers:
- Flower Color:
- Pink
- Purple/Lavender
- Flower Inflorescence:
- Panicle
- Flower Value To Gardener:
- Edible
- Fragrant
- Flower Bloom Time:
- Spring
- Flower Shape:
- Funnel
- Tubular
- Flower Petals:
- fused petals
- Flower Size:
- 1-3 inches
- Flower Description:
- Large showy upright clusters 14" long of funnel or tube-like 1.5-2 inch long fragrant, edible, flowers appear in the spring. Pale violet to pink with dark spots and yellow stripes; vanilla scented. Flowers resemble foxglove.
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Leaves:
- Woody Plant Leaf Characteristics:
- Deciduous
- Leaf Color:
- Green
- Leaf Feel:
- Velvety
- Leaf Type:
- Simple
- Leaf Arrangement:
- Opposite
- Leaf Shape:
- Cordate
- Ovate
- Leaf Margin:
- Entire
- Hairs Present:
- Yes
- Leaf Length:
- > 6 inches
- Leaf Description:
- Opposite simple oval or heart-shaped 5-12 inch with velvety hairs on both sides, pale in color on the underside, resemble catalpa leaves.
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Bark:
- Bark Color:
- Light Brown
- Light Gray
- Surface/Attachment:
- Fissured
- Lenticels
- Bark Description:
- Thin greyish brown with shallow fissured bark and lenticles.
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Stem:
- Stem Color:
- Gray/Silver
- Stem Is Aromatic:
- No
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Landscape:
- Problems:
- Invasive Species
- Messy
- Weak Wood
- Weedy