SelecTree: Tree Detail

GIANT CRAPE MYRTLE
Lagerstroemia speciosa

Lagerstroemia speciosa Lagerstroemia speciosa Lagerstroemia speciosa Lagerstroemia speciosa Lagerstroemia speciosa Lagerstroemia speciosa Lagerstroemia speciosa Lagerstroemia speciosa Lagerstroemia speciosa Lagerstroemia speciosa Lagerstroemia speciosa Lagerstroemia speciosa Lagerstroemia speciosa Lagerstroemia speciosa Lagerstroemia speciosa

Photo Locations: Maui, Oahu, Kona, Hilo, HI and Foster Botanical Garden - Honolulu, HI

General Notes

The giant crape myrtle has a large native range, from India to Southern China, to Northern Australia and is widely grown throughout the world as an ornamental shade tree. It is briefly deciduous in winter, has shedding, flaky bark, and can grow to be a large tree. In Hawai'i, it’s often found in schoolyards, around old homes, and as a street tree where it’s beautiful flowers bloom in late spring or early summer. These trees tend to do better and flower more profusely when planted in poor soil. Lagerstroemia speciosa has a HPWRA (Hawai'i Pacific Weed Risk Assessment) score of -4 (Low Risk), and the Plant Pono link is: https://plantpono.org/pono-plants/lagerstroemia-speciosa/.

Native to India to Australia.

Family: Lythraceae

Additional Common Names

QUEEN'S CRAPE MYRTLE, GIANT CRAPE MYRTLE, BANABA PLANT

Tree Characteristics

Rounded or Vase Shape.

Has Partly Deciduous foliage.

Height: 40 - 65 feet.

Width: 30 - 40 feet.

Growth Rate: 24 or More Inches per Year.

Leaves Elliptic, Green, Red or Purple or Bronze, Partly Deciduous.

Flowers Showy. Pink or Lavender. Flowers in Summer. Has perfect flowers (male and female parts in each flower).

Persistent, Brown Capsule.

Bark Gray, Rough.

Shading Capacity Rated as Moderate to Moderately Dense in Leaf.

Shading Capacity Rated as out of Leaf.

Tree Site Conditions & Constraints

Sunset Zones H1 and H2.

USDA Hardiness Zones 9 - 10.

Exposure Full Sun.

Well Drained Soil.

Clay, Loam or Sand Texture.

Acidic to Alkaline Soil pH.

Pests & Disease Information

Susceptible to Aphids and Scales, Sooty Mold.

Health, Safety & Environmental Concerns

Root Damage Potential Rated as Low.

Special Uses & Values

Specimen, Shade Tree, Buffer Strip or Street Tree.

Cite this tree:
SelecTree. "Lagerstroemia speciosa Tree Record." 1995-2020. Aug 14, 2020.
< https://selectree.calpoly.edu/tree-detail/lagerstroemia-speciosa >

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.