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Wattleseed Acacia are perennial woody crops of varying age and size with some reaching 4m tall and 5m across. [4] Their large size and multiple stems is an impediment to harvesting and has resulted in the development of several strategies of collecting seed pods, including 'finger stripping' of pods off of foliage, 'butt shaking' of the tree to dislodge pods, and whole biomass harvesting. [6]
Sandplain wattle grows as a tall shrub or small tree typically to a height of 2 to 5 m (6 ft 7 in to 16 ft 5 in) but can grow as tall as 8 m (26 ft). [4] It is able to form suckers and form dense colonies. It has glabrous branchlets that are often covered in a fine white powdery coating giving it frosted appearance. [3]
Acacia pycnantha, most commonly known as the golden wattle, is a tree of the family Fabaceae. It grows to a height of 8 metres (26 feet) and has phyllodes (flattened leaf stalks) instead of true leaves. The profuse fragrant, golden flowers appear in late winter and spring, followed by long seed pods.
It can take full sun or partial shade, can grow in saline soils and is frost tolerant and drought tolerant once established. Used in gardens as an ornamental screen or as a low windbreak, [1] as it is fast growing and has attractive foliage. [2] The best known cultivar of A. iteaphylla is a low-growing form called Acacia "Parsons Cascade". [3]
The tree's seeds number about 65 per gram. [7] A. maidenii can be propagated from seed but, in order to increase the germination rate, the seed should be treated first. It can be soaked in hot water or the seed can be nicked or otherwise mechanically scarified, so that water will penetrate the seed's hard coating and induce germination.
The smooth, brown and linear shaped seed pods that form after flowering can be straight or curved and have a length of up to 12 cm (4.7 in) and a width of 5 mm (0.20 in). The hard, black seeds found within the pods have an ellipsoidal shape with a length of 7 mm (0.28 in) and a width of 4 mm (0.16 in).
Seed pods form later that are curved or coiled and mostly flat except where raised over seeds. The leathery to woody pods are 4 to 25 cm (1.6 to 9.8 in) long and 5 to 12 mm (0.2 to 0.5 in) wide. [6] Seeds can be collected from March to May and sown from November to February and will germinated in 3 to 10 weeks.
The straight to slightly curved pale brown coloured seed pods that form after flowering have a length of up to 9 cm (3.5 in) and a width of 6 mm (0.24 in) and contain black, oblong to ovoid shaped seeds with a length of around 7 mm (0.28 in) and a width of 4 mm (0.16 in).