El Palmar National Park. The ceibo, recognized as Argentina"s national flower, brings vibrant beauty to the Littoral region during spring with its stunning red blooms. These flowers are particularly abundant in the provinces of Entre Ríos, Corrientes, and Santa Fe, where the riverbanks are adorned with blossoming ceibos. A fantastic spot to see this species thriving in its natural environment is El Palmar National Park, located in Entre Ríos.