Fireblossom

Fireblossom is a type of Herb which appears as a small, magma-colored flower. It grows on Ash Blocks in the Underworld and can be cut with virtually any weapon or tool. You can also plant it in Clay Pots, on Planter Boxes, or on Ash Blocks using Fireblossom Seeds.

As of version 1.3, Fireblossom will bloom when the sun is setting, from 3:45 PM to 7:30 PM. Pending another update, console and mobile versions of Terraria still require that Fireblossom be submerged in lava in order to bloom. A blooming Fireblossom will take on an appearance like the one in the adjacent picture. A blooming Fireblossom will also shoot a stream of sparks into the air.

History
Fleur de Feu Fireblossom Огнецвет