Now that Valentine’s Day is over, you may need some Viagra...

Are those Valentine roses looking a little limp?

Find some Viagra. Australian researchers got curious and gave some wilting flowers a fraction of the little blue pill. The result: the stems stood straight up for about a week beyond their natural lifespan.

It didn’t take much Viagra to get the job done. They put just one milligram into the vase. A typical human dose comes in 25, 50 or 100 milligrams.