Botanical name: Sesbania punicea Family: Fabaceae
Rattlebox is a deciduous, leguminous shrub that grows up to 4 m tall. In spring or early summer, it produces a profusion of attractive red or orange flowers. The ribbed seed pod is 6-8 cm long and may contain 4-10 seeds. In the United States, S. punicea was introduced as a garden ornamental. It escaped cultivation and formed dense thickets along river banks, ditch banks and disturbed areas from Florida to eastern Texas. Throughout these areas the plant has become an invasive weed, principally on river banks and in wetlands, where it has excluded native plants.
The flower labeled Rattlebox is ...