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Publication #ENH431

Geijera parviflora: Australian-Willow1

Edward F. Gilman and Dennis G. Watson2

Introduction

Australian-Willow is an attractive evergreen, 30 to 35 feet tall and 20 feet wide, with an upright, oval silhouette. The main inner branches are composed of strong, wind-resistant wood and are directed upward, while the outer smaller branches are somewhat pendulous. This gives a decided weeping habit to older trees. Younger trees are more oval-shaped. This characteristic, combined with the thin, narrow, three to six-inch-long, olive green leaves which droop from the branches, gives the tree much the same effect as a Weeping Willow. Short panicles of small, creamy white, showy flowers appear in early spring and early fall.

Figure 1. 

Middle-aged Geijera parviflora: Australian-Willow


Credit:

Ed Gilman


[Click thumbnail to enlarge.]

General Information

Scientific name: Geijera parviflora
Pronunciation: gay-JEER-uh par-vih-FLOR-uh
Common name(s): Australian-Willow
Family: Rutaceae
USDA hardiness zones: 9A through 11 (Fig. 2)
Origin: not native to North America
Uses: deck or patio; shade; specimen; street without sidewalk; screen; parking lot island < 100 sq ft; parking lot island 100-200 sq ft; parking lot island > 200 sq ft; tree lawn 3-4 feet wide; tree lawn 4-6 feet wide; tree lawn > 6 ft wide
Availability: not native to North America

Figure 2. 

Range


[Click thumbnail to enlarge.]

Description

Height: 30 to 35 feet
Spread: 20 to 25 feet
Crown uniformity: symmetrical
Crown shape: weeping, round, oval
Crown density: dense
Growth rate: fast
Texture: fine

Foliage

Leaf arrangement: alternate (Fig. 3)
Leaf type: simple
Leaf margin: entire
Leaf shape: lanceolate, linear
Leaf venation: pinnate
Leaf type and persistence: evergreen
Leaf blade length: 2 to 4 inches
Leaf color: green
Fall color: no color change
Fall characteristic: not showy

Figure 3. 

Foliage


[Click thumbnail to enlarge.]

Flower

Flower color: white/cream/gray
Flower characteristics: showy

Fruit

Fruit shape: round, irregular
Fruit length: .5 to 1 inch
Fruit covering: dry or hard
Fruit color: unknown
Fruit characteristics: does not attract wildlife; not showy; fruit/leaves not a litter problem

Trunk and Branches

Trunk/bark/branches: branches droop; not showy; typically one trunk; thorns
Pruning requirement: needed for strong structure
Breakage: resistant
Current year twig color: green
Current year twig thickness: thin
Wood specific gravity: unknown

Culture

Light requirement: full sun
Soil tolerances: sand; loam; acidic; slightly alkaline; well-drained
Drought tolerance: moderate
Aerosol salt tolerance: moderate

Other

Roots: not a problem
Winter interest: no
Outstanding tree: yes
Invasive potential: little invasive potential
Ozone sensitivity: unknown
Verticillium wilt susceptibility: unknown
Pest resistance: free of serious pests and diseases

Use and Management

Australian-Willow casts a light shade and is ideal for use around a patio or as a lawn specimen, but may be too weeping for use as a street tree unless it is properly trained when it is young. If the lowest main limbs are located high enough above the ground and are oriented in an upright-spreading fashion, then there will be clearance even for large trunks. Only small branches may have to be removed later as they droop from the main limbs toward the ground. Otherwise the tree has very good cultural adaptability to urban spaces.

Australian-Willow will give best growth in full sun on moist but well-drained soil although plants can tolerate light shade and very dry conditions. Trees grown in the open very rarely require any pruning if located where the drooping branches will not interfere with traffic below. A popular tree for the dry southwest, not really known or planted in the East.

Propagation is by seed.

Pests and Diseases

No pests or diseases are of major concern. Root rot may be a problem on sites without excellent drainage.

Footnotes

1.

This document is ENH431, one of a series of the Environmental Horticulture, UF/IFAS Extension. Original publication date November 1993. Revised October 1998. Reviewed February 2014. Visit the EDIS website at http://edis.ifas.ufl.edu.

2.

Edward F. Gilman, professor, Environmental Horticulture Department; Dennis G. Watson, former associate professor, Agricultural Engineering Department, UF/IFAS Extension, Gainesville, FL 32611.


The Institute of Food and Agricultural Sciences (IFAS) is an Equal Opportunity Institution authorized to provide research, educational information and other services only to individuals and institutions that function with non-discrimination with respect to race, creed, color, religion, age, disability, sex, sexual orientation, marital status, national origin, political opinions or affiliations. For more information on obtaining other UF/IFAS Extension publications, contact your county's UF/IFAS Extension office.

U.S. Department of Agriculture, UF/IFAS Extension Service, University of Florida, IFAS, Florida A & M University Cooperative Extension Program, and Boards of County Commissioners Cooperating. Nick T. Place, dean for UF/IFAS Extension.