The black wattle tree is a dangerous alien invader.  It is an evergreen tree and can grow up to 30 meters in height.

These intruders were introduced into South Africa between 1858 and 1864.  it is not sure whether the first black wattle trees were planted in the Cape Town Botanical Gardens (1858) as decorative trees or in the present-day KwaZulu-Natal near Camperdown (1864) as commercial trees. 

Due to its high tannin content (around 30%), the black wattle was planted commercially to be used in tanning leather.  The wood was also used for firewood, building materials and as wood chips.

Unfortunately these exotic trees – native to South-East Australia – have started growing profusely outside commercial plantations, along water courses and roads.  They tend to grow in dense copses, especially after a fire has passed through the area.  Because these trees were planted outside of their natural habitat, they do not have to contend with their natural enemies, which control their numbers.  These trees steal water, nutrients and light from our indigenous plants and trees, and therefore replace our native flora.  Especially our fynbos areas are threatened by the black wattle.

The black wattle has been declared an invader plant throughout South Africa, except in areas where they are commercially planted.    These commercially planted trees should be monitored, however, and be prevented from spreading out of the plantations.

Black wattles reproduce by their seeds, which can remain dormant, yet fertile, for a period of 50 to 80 years.  These seeds do not germinate immediately, and can gather quite thickly under the trees.  Should a wild fire spread through the trees, all of the seeds will germinate simultaneously, which causes an even bigger problem.

These trees also re-sprout rather heartily, adding to the level of difficulty in getting rid of them.  Should you fell a wattle tree, you must ensure that you treat the stump with a herbicide, to prevent it from re-sprouting.  As these trees normally flourish along water courses, you need to ensure that you use a registered herbicide and definitely steer clear of diesel-based products, as this will contaminate the water course.

If the trees are still young – seedlings and saplings – you can pull them out by hand, when the soil is wet.  However, if there are very many of them, it is best to use chemical control measures, as extreme soil disturbance will also promote the germination of seeds.

The bottom line is that you should never plant a black wattle in your garden and you should do your share in terminating these plants responsibly to enhance the growth of our indigenous flora.

The landscaping experts at Kingfisher Landscaping design and implement exceptional and beautiful gardens in a professional manner and can provide the home owner with any exterior decorative feature.  We pride ourselves in providing our clients with excellent, efficient and comprehensive service.  We offer all the products and services associated with creating a peaceful, and aesthetically pleasing outdoor living space which will complement the style of your home and in which you can relax.

The monkey thorn (acacia galpinii) has been appointed as one of the trees of the year for 2009, by the Department of Water and Environmental Affairs.

This fast growing tree – with its lush, light green foliage – can grow up to 36 meters in height and has a wide, spreading crown.  It is a deciduous tree, which means that it loses its leaves during winter.  During spring, this lovely tree carries light yellow flowers and maroon-coloured seed pods during late summer and autumn.  The monkey thorn is ideal for large gardens and can be planted in your lawn – or along the edges of your lawn – as it provides mottled shade, which will allow enough sunlight through to the grass blades.

This indigenous tree is quite hardy and can survive in hot and dry weather conditions, as well as, frost to some degree.  Saplings should be properly protected from frost, however.  It also attracts insects, such as bees and wasps, and will also provide shelter for birds in your garden.

The landscaping experts at Kingfisher Landscaping design and implement exceptional and beautiful gardens in a professional manner and can provide the home owner with any exterior decorative feature.  We pride ourselves in providing our clients with excellent, efficient and comprehensive service.  We offer all the products and services associated with creating a peaceful, and aesthetically pleasing outdoor living space which will complement the style of your home and in which you can relax.

You can train your saplings to grow to your liking! 

Should you want your trees to grow as tall as possible, you can guide your trees by trimming the lowest branches off each year.  It will promote strong leader shoots, which will make the tree grow higher in a shorter amount of time.  This is called formative pruning.

Once your tree as achieved the desired height, you can let it grow naturally to form a thick crown and reach its own shape.

The landscaping experts at Kingfisher Landscaping design and implement exceptional and beautiful gardens in a professional manner.  We pride ourselves in providing our clients with excellent, efficient and comprehensive service.  We offer all the products and services associated with creating a peaceful, and aesthetically pleasing outdoor living space which will complement the style of your home and in which you can relax.

Young plants and frost-sensitive plants need to be protected from extreme cold. 

You can cover these plants with frost guard or Hessian, which you can buy at a garden centre, hardware store or nursery.  These materials allow air and water through, so it is safe to keep your plants covered until spring. 

Saplings can be protected from frost by wrapping straw bundles around the stems.

You can also protect your plants from frost, by not watering in the late afternoon, as the wet ground will make the frost even more severe.  It is best to water your garden in the mornings, to allow the excess water to dry during the day. 

The landscaping experts at Kingfisher Landscaping design and implement exceptional and beautiful gardens in a professional manner.  We pride ourselves in providing our clients with excellent, efficient and comprehensive service.  We offer all the products and services associated with creating a peaceful, and aesthetically pleasing outdoor living space which will complement the style of your home and in which you can relax.