With some fresh spring specimens I set up my dark room with my blacklight LED flashlight and my tube blacklight in later photos.
The rose petals were delicate so I was very careful handling them.
I think that glowing dot is a bug of some kind.
The inside of the pedals were glowing inside, not sure why but sure looked inviting.
Above was using my fluorescent tube blacklight, its hard to use in these photos as it lights up the whole room. So I only have one to show for.