They say flowers bought with love last longer. I suspect this has to do with the intent and care put behind the purchase.
If someone walks into the store in a rush to buy some flowers, they’re going to pick out whatever looks best at a glance and leave. These flowers could be showing subtle signs of aging they didn’t pick up on.
If someone walks into the store and actually puts some time and effort into picking out the flowers, they’ll notice little imperfections on each bundle until they find the perfect one. Therefor, if you walk in the store and really try to pick out some nice flowers, they’re of course going to last longer. Hence: flowers bought with love last longer.