Germinating and Growing

Common African Indigenous Trees

 

 

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Umbrella Thorn

Acacia tortilis
 

 

 

 

 

1/ A kilogram of seed contains roughly 32,000 seeds. This tree is easily grown from seed immersed in hot water, left to soak overnight and planted directly into black plastic nursery bags or in seedling trays the following morning. River sand is a good medium to use. Cover seed lightly with the same river sand and keep moist. This is one of the Acacia species of which the seedlings form a very long taproot and they must be planted out after the first leaf has formed. It is frost and drought-resistant. It has a medium growth rate, 500-600 mm per year, but it can be speeded up by cutting away the lower branches. The umbrella thorn is a protected tree in the Northern Cape and Free State.

 

 

2/ Like all acacias, the seeds grow readily if removed from the pods, having boiled water poured over them and being allowed to stand for 24 hours. Plant in well-fertilised soil. Being a deep-rooted species, it is quite drought-resistant and makes a decorative tree in the garden.

 

 

 

 

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This web page was last updated on: 07 August, 2012