The Lisbon tree in Perth typically refers to the Lisbon lemon tree, a popular citrus variety grown in the region. Known for its hardy nature, it thrives in Perth's Mediterranean climate, producing juicy, tart lemons. This tree is evergreen, with glossy dark green leaves and fragrant white flowers. Lisbon lemons are commonly used in cooking, and the tree itself is often seen in home gardens, parks, and orchards throughout Perth. It is favored for its high yield and ability to withstand hot summers.