I have seen quite a few of these recently, in houses with actual front gardens.
It's the height of the flowering season, real flowers are everywhere, why on earth does a door need a fake flower wreath in summer?
I hate fake winter wreaths at Christmas but at least I can understand it more then, with bare gardens and trees and with it being more traditional to have a wreath at that time of year. Sometimes I make my own out of real foliage etc then or sometimes I don't bother with one.
A couple of people near me have had a fake flower one up since before Easter, surely they get dirty, dusty and faded, as well as looking generally crap.
It's a very strange thing.
Edited to say I accidentally appeared to have added a poll, did not intend to do that.