Acacia paradoxa

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Acacia paradoxa
Light:Full Sun
Moisture:Xeric Mesic
Hardiness:8
Soil pH:5.6-8.4
Evergreen
Height:16'
Blooms:Late Winter-Late Spring
Native to:
Nitrogen Fixer
Edible Rating:PFAF Edibility Rating
Tea:Yes

Acacia paradoxa (common name: kangaroo thorn)

Propagation: Seed - best sown as soon as it is ripe in a sunny position in a warm greenhouse[1]. Stored seed should be scarified, pre-soaked for 12 hours in warm water and then sown in a warm greenhouse in March. The seed germinates in 3 - 4 weeks at 25°c[2]. As soon as the seedlings are large enough to handle, prick them out into individual pots and grow them on in a sunny position in the greenhouse for their first winter. Plant them out in late spring or early summer, after the last expected frosts, and consider giving them some protection from the cold for their first winter outdoors.

Cuttings of half-ripe wood with a heel, July/August in individual pots in a frame[3]. Overwinter in a greenhouse for the first winter and plant out in their permanent positions in late spring or early summer. Fair percentage[3].

Cultivation: A very tough plant that stands both wet and drought well, it is lime-tolerant and also withstands salt-laden winds[4]. Prefers a sandy loam and a very sunny position[1]. Succeeds in dry soils. Succeeds in any good garden soil that is not excessively limey[5]. Most members of this genus become chlorotic when grown on limey soils[6].

Trees are not very hardy outdoors in Britain, they tolerate occasional temperatures down to between -5 and -10°c, but even in the mildest areas of the country they are likely to be killed in excessively harsh winters[5].

This species has a symbiotic relationship with certain soil bacteria, these bacteria form nodules on the roots and fix atmospheric nitrogen. Some of this nitrogen is utilized by the growing plant but some can also be used by other plants growing nearby[6].

Range: Australia - New South Wales, Victoria.

Habitat: Grows in dry sclerophyl forests[7].

Edibility: Flowers - cooked[8]. Rich in pollen, they are often used in fritters.

Usage: A yellow dye is obtained from the flowers[9].

A green dye is obtained from the seed pods[9].

Plants are heavily armed with thorns and make a good screen or hedge in warm temperate areas[6].

Soil: Can grow in light, medium, and heavy soils.

Drainage: Prefers well drained soil.

Wind: Tolerates maritime wind exposure

In Leaf: Evergreen

Flower Type: Hermaphrodite

Links

References

  1. 1.0 1.1 Chittendon, Fred. RHS Dictionary of Plants. Oxford University Press, 1951.
  2. Rice, Graham. Growing from Seed Volume 1. Thompson and Morgan, 1987.
  3. 3.0 3.1 Sheat, Wilfrid. Propagation of Trees, Shrubs and Conifers. St Martin, 1948.
  4. Phillips, Roger and Martyn Rix. Conservatory and Indoor Plants Volumes 1 & 2. Pan Books, London, 1998.
  5. 5.0 5.1 Bean, William. Trees and Shrubs Hardy in Great Britain. Murray, 1981.
  6. 6.0 6.1 6.2 Huxley, Anthony. The New Royal Horticultural Society Dictionary of Gardening. MacMillan Press, 1992.
  7. Carolin, R. Flora of the Sydney Region. Reed, 1993.
  8. Cribb, Alan and Joan Cribb. Wild Food in Australia. Fontana, 1976.
  9. 9.0 9.1 Grae, Ida. Nature's Colors. MacMillan Publishing, 1974.