The Light Flower is a type of plant typically found in caves. This plant comes in a few different forms but is always characterized by the glowing bulb at the end of a stalk. Some of these plants come with multiple bulps.
The plant itself gives off light which can be used to protect you from Grue but it can also be harvested for Light Bulbs which can be used in a Lantern. This plant can not be dug up or replanted.