The tea tree, known as mānuka here in NZ and the jelly bush in other parts of the world, is a shrub indigenous to Aotearoa and Southeast Australia.
You might be familiar with tea tree oil. It actually comes from a different plant, and is relatively well-known Stateside as a mild antiseptic. It’s also been proven to be more effective than benzoic acid in fighting acne.
As the name suggests, a tea can be made from the leaves that is supposedly good for sore throats. The tree is common throughout New Zealand, and can be easily identified by its distinctive leaves and flowers.
Mānuka honey is popular here in New Zealand, both as sweetener and as a salve for wounds, and mānuka wood is commonly used as firewood, and for smoking meats/fish.