Sesbania punicea (Spanish gold, rattlebox, or scarlet sesban) is an ornamental shrub that produces reddish-orange flowers, has deciduous leaves, and grows to 15 feet high. This plant has a high demand for water, and thrives in swamps or high-moisture areas. It also requires a mildly acidic soil to grow, ranging between 6.1 and 6.5 pH.