Firstly, Corpse Flowers smell very bad, if it Rained Corpse Flowers, people may start wearing masks!
Secondly, Rafflesia Flower is the biggest flower in the world, if it Rained Rafflesia Flowers, even our Homes may get entirely covered!
Thirdly, if it Rained Thorny Flowers, some people may shift underground!
Lastly, Bees love Flowers, if it Rained Flowers, a swarm of bees may start heading towards the flowers!