Petunias are a summer garden staple, but this one glows in the dark. "It's really kind of freaky," said Vicki Rabas of ...

He told me that glow-in-the-dark things use a type of phosphorescence. That means they absorb energy – like light – and then ...

Firefly petunias, genetically modified with bioluminescent mushroom DNA, glow in the dark. The glow, primarily from the flowers, is most vibrant in new blooms and is similar to moonlight.