SelecTree: Tree Detail

SAPPHIRE DRAGON TREE
Paulownia kawakamii

Paulownia kawakamii Paulownia kawakamii Paulownia kawakamii Paulownia kawakamii Paulownia kawakamii Paulownia kawakamii Paulownia kawakamii Paulownia kawakamii Paulownia kawakamii Paulownia kawakamii Paulownia kawakamii Paulownia kawakamii Paulownia kawakamii Paulownia kawakamii

Photo Locations: Hoyt Arboretum - Portland, OR, Huntington Botanical Gardens - San Marino, CA, Stanford, CA, San Marcos Growers - Santa Barbara, CA and Cal Poly State University - San Luis Obispo, CA

General Notes

Wood is used for furniture making in Japan. Lavender flowers in spring. Hardy to 0 - 10 degrees F. with moderate water needs.

Has fragrant Flower.

Native to China.

Family: Bignoniaceae

Tree Characteristics

Erect or Spreading and requires ample growing space.

Rounded Shape.

Has Deciduous foliage.

Height: 25 - 35 feet.

Growth Rate: 36 Inches per Year.

Longevity 40 to 150 years.

Leaves Ovate to Palmately Lobed, Green, Golden or Yellow or Orange, Deciduous.

Flowers Showy. Fragrant Lavender. Flowers in Spring. Has perfect flowers (male and female parts in each flower).

Brown Capsule, Large (1.50 - 3.00 inches), fruiting in Spring.

Bark Black or Dark Gray, Smooth.

Shading Capacity Rated as Dense in Leaf.

Shading Capacity Rated as Moderate out of Leaf.

Litter Issue is Dry Fruit and Twigs.

Tree Site Conditions & Constraints

Sunset Zones 4 - 9 and 11 - 24.

USDA Hardiness Zones 7 - 11.

Exposure Full Sun.

Moist Soil.

Clay, Loam or Sand Texture.

Highly Acidic to Highly Alkaline Soil pH.

Salinity Tolerance is Moderate on Coast.

Seaside Tolerance is Good in Mild Zone.

Health, Safety & Environmental Concerns

Branch Strength Rated as Medium Weak

Root Damage Potential Rated as High.

None Known Health Hazard.

Desirable Wildlife Plant.

Cite this tree:
SelecTree. "Paulownia kawakamii Tree Record." 1995-2020. Aug 14, 2020.
< https://selectree.calpoly.edu/tree-detail/paulownia-kawakamii >

SelecTree Nursery Connection Map
Cal Poly / ESRI