Dennis the Menace US/Headscratchers

Dennis the Menace (1993 film)

 * How could a flower which blooms for a few seconds and then dies be remotely viable? Plants flower for a reason, and even those that almost never bloom do so for long enough to allow pollination. Perhaps it was specifically bred that way, but it seems like a pretty bad idea to breed for such a thing. Furthermore, how did they know the precise timing of when it would bloom? -- anonymous
 * When it blooms it sends out millions and millions of invisible spores.
 * A good possibility. It would mean the thing that's blooming isn't an actual flower, but something more analogous to a dandelion head. That still leaves the issue of how it pollinates, but perhaps the botanical flower is simply unobtrusive enough to be ignored. The issue of flowering once in 40 years is less impossible.
 * It could be a genetically engineered failure that is only grown for the bragging rights.
 * Yeah, that sounds like something Mr. Wilson would grow.