Family: Fabaceae

Leucaena leucocephala, commonly known as haole koa, is considered invasive in the Hawaiian Islands. Originally introduced for agricultural purposes, fodder, firewood, erosion control, soil improvement, shade trees for coffee or cocoa plantations, and as a nitrogen-fixing plant, it has since spread aggressively in many areas. It thrives in a wide range of soil types, grows rapidly, and produces large quantities of seeds, which allows it to outcompete native species. Its dense growth can create monocultures, reducing biodiversity by displacing native plants and altering ecosystems. Due to these impacts, L. leucocephala is managed in some areas to prevent further spread.