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Acacia mearnsiiAcacia nilotica

Acacia nigrescens
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Acacia nigrescens

Price per Unit (per 100 seeds): $7.00

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Acacia nigrescens (Fabaceae), Knob thorn (e), Knoppiesdoring (a), umKhaya (z). Fairly hardy (protect from frost when young), drought resistant, deciduous tree with a straight stem and rough bark with large spine tipped knobs; especially on the trunks of young trees. It has hard ferocious hook thorns, branches high up and has a spreading crown. In autumn the foliage turns yellow. Before the leaves appear, the tree is covered in masses of deep pink buds that open into spikes of scented creamy-white flowers that attract a mass of insects and birds. It is a little slow growing to start. This tree makes a good bonsai subject. Hole nesting birds favour this tree. Cattle and game relish the dark pods. This tree, along with Combretum imberbe (Leadwood), is the quintessential bushveld tree. Size 7 to 20m. Sowing : Sow in summer. Soak seeds in hot water for 12 hours before planting. Seeds take 9 days to start germinating. Locality : Upington. Date of harvest : April 2018.