We all know the yellow soursob which luckily we don't have a lot of, however we do have the pink flowering variety. This is Oxalis purpurea also a native of South Africa. The yellow variety is a noxious weed in South Australia and was introduced to the state from South Africa in 1841. Oxalis is toxic to breeding ewes, while it doesn't produce seed any soil disturbance allows the bulbs and bulbils to spread. We have a small area near one of our gates of this pink variety and I do keep an eye on its spread. The animals don't seem to eat it.
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