The river pumpkin is a marsh-plant that can only grow in very wet sites. The leaves of this plant resemble those of a pumpkin, hence its common name. It is important to note that the plants will die back in the cold, winter months, even in the warmest of areas. The flower stalks and petioles as well as the leaf stems are edible and are consumed by native people across the world. ZA Distribution: Eastern Cape, Free State, Gauteng, KwaZulu-Natal, Limpopo, Mpumalanga, North West, Western Cape.