Tree lupin is a flowering plant belonging to the Fabaceae family, known for its tall, bushy growth and vibrant blue to purple flowers. It can reach heights of up to 3 meters and typically blooms in late spring to early summer. The plant is native to New Zealand and is often found in coastal areas and disturbed sites. This species is valued for its ability to improve soil quality through nitrogen fixation, making it beneficial for land restoration projects. However, tree lupin can also become invasive in some regions, outcompeting native plants and altering local ecosystems.