Metrosideros polymorpha, commonly known as ʻŌhi’a lehua, is an evergreen tree endemic to the Hawaiian Islands, where it thrives in a range of ecosystems from sea level up to 8202 feet, including volcanic slopes, rainforests, and dry forests. It exhibits remarkable variability in form, ranging from tall, dominant canopy trees to prostrate shrubs. The species is known for its showy flowers, which can be red, yellow, orange, or even salmon-colored, blooming throughout the year but most prolifically from March to June. The flowers are a key resource for native Hawaiian birds and insects.

ʻŌhi’a lehua is valued for its cultural significance and ecological importance. It is often used in native reforestation efforts and is considered a pioneer species in lava flows. The wood is dense and strong, historically used for making traditional Hawaiian tools and structures. In cultivation, it prefers well-draining volcanic soils but is adaptable to various soil types and rainfall conditions. While it can grow in full sun to part shade, it does best with ample sunlight. Challenges include the threat of Rapid ʻŌhi’a Death (ROD), caused by Ceratocystis fungi, which has led to significant conservation efforts to protect this species. Gardeners should be aware of this disease and source plants from reputable nurseries to prevent its spread.CC BY-SA 4.0