ABCDEFGHIJKLMNOPQRSTUVWXYZ

Brooweena SF, Qld

Natural populations

This species extends along coastal and adjacent tableland areas north from Nerriga on the south coast of New South Wales to near Yeppoon Queensland [1,2,3]. In New South Wales it extends as far west as Inverell and has widely disjunct outliers in the Carnarvon Range and at Ravenshoe in Queensland. It is a widely cultivated species in urban areas thoughout its range. Acacia fimbriata is found near creeks, on margins of rainforests and on hillsides on rocky, sandy soils [1,2].

Flowering and seeds

Acacia fimbriata flowers during winter and spring and pods mature during November-December [3,4]. There are about 80 viable seeds per gram [4]. Nicking or boiling the seeds in water for a minute at 100°C is required to induce germination. The seeds start to germinate in about 4 days if grown at 25°C [4].

Cultivation and uses

Acacia fimbriata is a fast growing, nitrogen-fixing shrub or small tree. It can grown on a range of well-drained soils and has an important role to play in catchment protection. This species is hardy under cultivation and is common as a ornamental in eastern Australia.

Key descriptors:
Climate parameters
Mean annual rainfall: 650-1700 mm
Rainfall distribution pattern: summer or uniform
Mean annual temperature: 10-21 °C
Mean max. temperature of the hottest month: 23-31 °C
Mean min. temperature of the coldest month: -1-9 °C
Frosts per year: frost free or more or less frost free, up to 20 or greater than 20
Frost intensity:  light to moderate (0 to -5°C) or heavy (greater than -5°C)
Altitude: 0-1300 metres
Tolerance of climate extremes
Drought: known to be moderately drought tolerant
Fire: killed by damaging fire does not regenerate foliage
Frost: tolerates frosts in the 0° to -5°C range or tolerates heavy frosts colder than -5°C
Wind: tolerates salt-laden coastal winds
Soil factors
Texture clay: loam, heavy clay (greater than 50% clay), light to medium clay (35-50% clay) or loam, sandy loam, sandy clay loam
Soil pH reaction: acidic (less than 6.5) or neutral (6.5-7.5)
Soil depth: moderate to deep (30-100 cm or greater)
Drainage: well-drained
Salinity: non-saline
Tolerance of adverse soils
Extremes in pH: acidity
Extremes in texture: clayey
Salinity: nil - sensitive to saline soils
Soil waterlogging tolerance: nil - sensitive to waterlogged soils
Fire sensitivity: killed by severe fires (seeder)
Growth habit: shallow roots may outcompete adjacent plants
Biological traits under cultivation
Habit: evergreen, multi-stemmed from or near ground level or shrub or small tree less than 5 m tall
Longevity: moderate to long lived (>15 years) or short-lived less than 15 years
Growth rate: fast
Coppicing ability: nil or negligible
Erosion control potential: excellent for clayey sites or excellent for sandy sites
Root system: moderate to deep, shallow and spreading, fixes nitrogen via root symbiot
Shade tolerance: grows best in full sunlight
Wood density: low (less than 600 kg/cubic metre) or mod. to high (greater than 600 kg/cubic metre)
Carbon sequestration potential: low-moderate
Uses
Potential farm use: good ornamental attributes
Specialty products: pollen has value for apiculture or foliage, fruits have potential for floriculture
Urban use: good as an ornamental or amenity plant, ideal maintenance free street tree, suitable as a screen or hedge
Potentially undesirable attributes
Weediness: high potential based on its biology

References

[1] Maslin BR (2001) Acacia fimbriata. Flora of Australia, 11A: 310-311. 

[2] Maslin BR (coord.) (2001) WATTLE: Acacias of Australia CD-ROM, Australian Biological Resources Study/CSIRO Publishing, Melbourne.

[3] Tame T (1992) Acacias of New South Wales. Kangaroo Press, Sydney.

[4] Gunn BV (2001) Australian Tree Seed Centre Operations Manual. Internal Publication, CSIRO Australian Tree Seed Centre, ACT. [Online at http://www.ensisjv.com/Portals/0/atsc-opmanualcomplete.pdf  Accessed March 2008]

Internet links

PlantNET National Herbarium of New South Wales: http://plantnet.rbgsyd.nsw.gov.au/cgi-bin/NSWfl.pl?page=nswfl&lvl=sp&name=Acacia~fimbriata

World Wide Wattle: http://www.worldwidewattle.com/speciesgallery/species-intro.php?id=20572

Top