SelecTree: Tree Detail

HAU OR COASTAL HIBISCUS
Hibiscus tiliaceus

Hibiscus tiliaceus Hibiscus tiliaceus Hibiscus tiliaceus Hibiscus tiliaceus Hibiscus tiliaceus Hibiscus tiliaceus Hibiscus tiliaceus Hibiscus tiliaceus Hibiscus tiliaceus Hibiscus tiliaceus Hibiscus tiliaceus Hibiscus tiliaceus Hibiscus tiliaceus

Photo Locations: Oahu, Hilo, HI

General Notes

This Hawaiian indigenous species thrives in wet habitats, in brackish swamps, or freshwater courses inland. It is planted for shade in coastal areas exposed to salt spray and strong winds or used as a privacy screen, windbreak, or hedge. Variegated varieties are commonly grown. The wood is used for boat construction, firewood, and carvings. The bark and roots may be boiled to make a cooling tea. Hau inner bark has numerous uses for rope, coarse nets, medicine, fire-making, canoe booms and floats, and lei cordage. Hibiscus tiliaceus has no HPWRA (Hawai'i Pacific Weed Risk Assessment) score.

Native to Old World Tropics.

Family: Malvaceae

Additional Common Names

HAU, COASTAL HIBISCUS, COTTONWOOD, SEA HIBISCUS, BEACH HIBISCUS, COASTAL COTTONWOOD, GREEN COTTONWOOD, NATIVE ROSELLA, KURRAJONG, SEA ROSEMALLOW, MARI

Tree Characteristics

Erect, Spreading or Weeping Low or High Canopy.

Rounded Shape.

Has Evergreen foliage.

Height: 15 - 30 feet.

Growth Rate: 36 Inches per Year.

Longevity Less than 50 years.

Leaves Heart-Shaped, Green, No Change, Evergreen.

Flowers Showy. Yellow or Orange. Flowers in Fall, Winter, Spring or Summer. Has perfect flowers (male and female parts in each flower).

Prolific, Brown Capsule, Medium to Large (0.50 - 3.00 inches), fruiting in Fall, Winter, Spring or Summer.

Bark Brown, Exfoliating, Fibrous or Furrowed.

Shading Capacity Rated as Moderate to Dense in Leaf.

Shading Capacity Rated as out of Leaf.

Litter Issue is Flowers, Dry Fruit and Leaves.

Tree Site Conditions & Constraints

Sunset Zones 23 - 24; H1, H2.

USDA Hardiness Zones 10 - 12.

Exposure Full Sun.

Well Drained Soil.

Drought tolerant.

Loam or Sand Texture.

Slightly Acidic to Neutral Soil pH.

Salinity Tolerance is Good Inland and on Coast.

Seaside Tolerance is Good.

Health, Safety & Environmental Concerns

Root Damage Potential Rated as Low.

Fire Resistance is Favorable.

Attracts Bees.

Special Uses & Values

Seaside Tree, Coastal Screen, Shade Tree, Coastal Street Tree, Sand Stabilizatio.

Bonsai or Hedged.

Cite this tree:
SelecTree. "Hibiscus tiliaceus Tree Record." 1995-2020. Aug 9, 2020.
< https://selectree.calpoly.edu/tree-detail/hibiscus-tiliaceus >

This tree is not part of the SelecTree Nursery Connection. If you would like to see this tree listed, or know of a nursery that sells it, please contact us at ufei@calpoly.edu.