Ngaio, also known as Myoporum laetum, is a versatile tree that has been used for various purposes throughout history. One of the most notable uses of Ngaio is its effectiveness as an insect repellent. The Maori people, indigenous to New Zealand, would extract the juice from the leaves of the Ngaio tree and apply it to their skin to repel sand flies and mosquitoes. This natural insect repellent was highly valued by the Maori, as these biting insects can be quite bothersome and even carry diseases.
In addition to its insect-repellent properties, Ngaio also has medicinal uses. The Maori people used various parts of the Ngaio tree to treat different ailments. For example, the leaves were commonly used to alleviate toothaches. They would chew on the leaves or apply them directly to the affected area to provide relief from the pain. The leaves were also used to treat various skin complaints, such as rashes or irritations. The soothing properties of the leaves helped to reduce inflammation and promote healing.
However, it is important to note that while Ngaio has its benefits, it can also be potentially harmful. The leaves of the Ngaio tree contain a liver toxin called ngaione. This toxin can cause sickness and even death in certain animals, including horses, cattle, sheep, and pigs. It is crucial to be cautious when using Ngaio around livestock or when considering its impact on the environment.
Ngaio is a valuable tree with multiple uses. Its insect-repellent properties make it a natural and effective solution for keeping sand flies and mosquitoes at bay. Additionally, its medicinal uses for toothaches and skin complaints highlight its therapeutic potential. However, it is essential to be aware of the potential risks associated with the liver toxin ngaione, particularly when it comes to livestock. Understanding the various uses and potential risks of Ngaio can help us make informed decisions about its cultivation and application.
