Accession Count: 10

Acacia craspedocarpa

Common Name: leather leaf acacia, hop mulga, wattle
Family Name: Fabaceae
Botanical Name: Acacia craspedocarpa
Synonyms:
Family Synonyms: Leguminosae
Sub Species:
Variety:
Forma:
Cultivar:
Characteristics: Acacia craspedocarpa is a dense, rounded, evergreen shrub that grows up to 5 m (15 ft) tall and half as wide. Its "leaves", which are actually modified leaf petioles are alternately arranged on the stem, obovate in shape, 1.5 cm (3.4 inch) long and gray-green in color. They are rough to the touch due to many branched veins and leathery. Flowers are yellow, borne in small 1 cm (1/2 in) cylindrical inflorescences in the leaf axils in the spring and intermittently at other times of the year. Fruits are legume pods, which are 5-10 cm (2-4 in) long and 2-4 cm (1-2 in) wide, are green initially and tan at maturity. They are slightly raised in the center where the seeds are located and very flattened along the edges. The name craspedocarpa (from the Greek words meaning margin and fruit) refers to this distinctive feature.
Compound: Aca cra
Geographic Origin: Australia
Ecozone Origin: Australsia
Biome Origin:
Natural History:

Native to Australia, Acacia species are generally found growing in sandy or rocky soil (2). Their ability to form symbiotic associations with N-fixing microbes in the soil allow them to grow in these nutrient poor soils. Seeds of acacia spp. are high in protein and serve not only as a nutritious food source for large animals but also a source of food and shelter for bruchidae seed weevils (2). Eggs are laid in or on the immature pod, and when the larvae hatch they penetrate, consume, grow, and pupate inside of the seed (2). Seeds dispersal may be dispersed by birds or in a mammal's feces (2). Acacia craspedocarpa is native to the southwest quadrant of Western (NE of Perth) where it grows in plains and along water ways (5).

Cultivation Notes:

Acacia can tolerate drought, and poor soil conditions. Plant in full sun to part shade (2). It should be planted in well-drained soils, as excess water can cause it to rot. It is highly drought tolerant once established and is very low maintenance. This specimen can be used as a barrier, screen, or informal hedge in a landscape when left unpruned, while pruning for structure early in its development and produce a small tree that casts dense shade.  A. craspedocarpa is hardy down to at least -8C (18°F) (5) The seeds of this and many other Acacia spp. require scarification before planting to improve germination success. Sulfuric acid is the most commonly used scarifying agent (2, 3). Treated seeds may be stored for a short amount of time before planting (2). Acacia spp. are most commonly propagated by seed, but it is also possible to propagate using cuttings, or using micropropagation techniques (3). Cuttings are considered difficult to root but may be improved by rooting under mist using 8000 ppm IBA talc (3).

Ethnobotany:

The bark, leaves, and root of many species of acacia (there are over seven hundred) are widely used for medicinal purposes by the aboriginal Australians (1). Ailments of a wide variety are treated with some form of Acacia spp., including diarrhea, laryngitis, venereal diseases, cuts and abrasions, skin irritation, the pain of childbirth, sores, scabies, aching joints, and congestion (1). The bark is used to make bandages and the wood is used to make boomerangs, spears, ax handles, digging sticks, music sticks, shields, and other tools (1).


Height: 11 - 15 feet
Width: 11 - 15 feet
Growth Rate: Slow Growing
Grow Season: Summer
Flower Season: Spring
Color: Yellow
Function: Screen
Spread: Non-spreading
Allergen: Non-allergenic
Invasive: Benign
Toxicity: Benign
Hardy: Hardy
Water Use: Low water Use

Citations:

1. Appetiti, E. (n.d.). Remedies from the Bush: Traditional Medicine Among the Australian Aborigines. Handbook of Medicinal Plants. Food Products Press. Print.

2. FAO Handbook on seeds of dry-zone acacias

3. Hartmann, K.T., and Kester, D.E. (2011). Plant Propagation: Principles and Practices (8th ed.). New Jersey: Prentice Hall. Print.

4. Maslin, B.R. (2001). Acacia craspedocarpa, Flora of Australia, 11B: 1. Print.

Starr, Greg. Star Nursery. Personal Communication. 

5. Desert Legume Program, Retrieved June 29, 2025. 

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Acacia craspedocarpa