A Bomb Flower is a rare flower with explosive properties. It is only known to grow in certain conditions such as very fertile land or lush, moist caves surrounded by Osh or other cave algaes.
Bombs which are ripe and ready to be detonated will have a red stem as opposed to an unripe flower which normally has a white stem. To detonate a ripe bomb flower, one simple has to crack a bit of the stem off. This creates a spark which ignites the flower's natural bomb fuse.