The first house we moved into on arrival in Mmabatho, Bophuthatswana, had been plonked onto the semi-desert sand. All the houses there were newly constructed from bricks and the garden areas had been surrounded by a wire fence. The winds howled, and dust storms regularly swept through the area, whipping up the sand loosened by the many construction projects that were involved in the process of starting a new town in the veld. We tried growing a patch of lawn, carefully watering it and marvelling as the kikuyu grass began to spread over the hot, dry sand. Then we watched in awe as the entire ‘lawn’ was carried away by harvester ants! A row of tall, sturdy marigolds was eaten by goats. Gardening there was obviously going to be a challenge.
A group of us decided to tackle our respective ‘gardens’ in earnest and drove to the nearest nursery in Lichtenburg. A neighbour strongly advocated purchasing rosemary on the grounds that “it is hardy and I have grown it everywhere we have settled.” She and her husband had indeed lived in India and various parts of Africa in the course of his work, and so rosemary made its way into my garden too – and I have always grown rosemary wherever we have moved to.
This is not about rosemary though, but the Spanish Broom (Spartium junceum) which – given the harsh conditions we were faced with – the helpful people at the nursery recommended to us. All four of us purchased more than one of these plants and duly planted them in our respective gardens. They proved to be tough and their fragrant bright yellow flowers delighted us from about August onwards. In the Eastern Cape they are still in full bloom during December.
The Spanish Broom, as its name implies, is a native of the Mediterranean region of Europe, was imported here both for ornamental purposes and, interestingly enough, for the control of erosion: fast-growing, tough and pretty – all qualities gardeners look for when starting a garden from scratch, particularly in an inhospitable environment. What we didn’t realise at the time is that this would become an unwelcome invasive species that has proved to be particularly problematic in the Eastern and Western Cape, Gauteng, and Mpumalanga.
As attractive as they are when in bloom, the Spanish Broom is now listed among the most problematic weeds in South Africa. Given that it is estimated they can produce up to 12 000 seeds per plant, it is not surprising to learn that they tend to block light and use up water required by the indigenous plant species. The plants are unpalatable to both domestic and wild animals and the large stands of them obviously reduces available forage. These are not thoughts that cross one’s mind when starting a garden and – at the time – were certainly not expressed by the enthusiastic sales people at the nursery!
The Spanish Broom has been declared a Category 1 plant, which means they may no longer be grown anywhere in South Africa. Gardeners are expected to remove them and nurseries may no longer sell them. So much for laws: unless they are vigorously implemented the march of the Spanish Broom will continue unabated – here is only a small patch of the swathes that have established themselves along the disused railway line cutting through the bottom end of our suburb.
A fascinating post. A bit like our rhododendron ponticum in its attractive thuggery.
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“Attractive thuggery” is an excellent description – thank you!
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🙂
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Derrick’s “Attractive thuggery” is exactly right! Sure is an illustration of how one problem solved begets another problem. And my gosh, I thought my yard with its dry shade presented gardening challenges. After reading this piece, I will never complain about my yard again. At least not as much. 😉
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We have to bear in mind too that people did not know as much about ‘invasive aliens’ years ago as we do now. Nonetheless, I am now more careful about the plants I introduce to our garden 🙂
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Good point!
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The yellow color of the Spanish Broom reminds me of our forsythia in the spring, and the rosemary of my lavender which likes drought too. Obviously I’m thinking spring!
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The pictures I have seen of forsythia look wonderful! Lovely images to keep in mind until spring arrives.
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A tale oft repeated around the world. Ignorance is not always bliss! Derrick is right, they are attractive thugs.
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Despite its ‘evil’ reputation, I cannot help enjoying these cheerful blooms that are growing along the disused railway line 🙂
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It is very attractive as so many invasive species are. And often so difficult to remove.
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As Eliza has pointed out, ‘ignorance is not always bliss’ and generations suffer down the line for the ignorance of the past.
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We had similar problems with rhododendrons and Himalayan balsam here. It is very difficult to get things back under control.
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It is in our nature to ‘bring home’ what strikes us as being attractive – we do not necessarily even think of the consequences of doing so!
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Interesting facts, Anne!
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Thank you very much, Aletta.
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They continue to spread gaily on the vacant property adjacent to ours – despite having been ‘eradicated’ at least once in the 8 years we have owned our cottage. Those 12,000 seeds per plant have evidently been germinating enthusiastically ever since.
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The patch of Spanish Broom I feature above has expanded rapidly over the past few years. I suspect it originated from ‘garden waste’ being dumped in an ‘out of sight out of mind’ manner. One has to watch out for this: gardeners are told to ‘get rid’ of weeds, cuttings and so on and they end up being dumped over the edge of a verge or even on a pavement a short distance away!
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Wow, I didn’t realise it was that invasive! Happily and luckily we only have the more mild mannered ‘purple broom’, the indigenous Polygala virgata in our garden. It does self seed, but not as prolifically.
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The Polygala virgata is a pretty plant.
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It’s creeping up and over our hills in New Zealand too. Some has self seeded in my neighbours garden. If we cut it down, I’m wondering how we actually dispose of it without spreading it. We’ve already had two large scrub fires in the area which have threatened houses so burning doesn’t seem an option. Any ideas for disposal of Broom?
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The important aspect it seems, is not to allow it to go to seed. Apart from using herbicides, I have read that one can cut it down at the base and control re-growth from there. If it is possible to dig them out, so much the better. Watch out for seedlings that come from your neighbour’s garden and pull them up as soon as you identify them.
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