Whatever their favorite flower is. You can't go wrong with that.
A Tulip
Go to Ashley's flower shop and buy a portable flower like a flower you give as a present to someone or that you plant.
Any kind
If you go to www.google.com then type in "walkthrough for treasure in the royal tower" it will give you the step-by-step process of what you need to do.
You help someone who is being attacked by bandits, they will have a wagon and the banits will be trying to kill him, save him and he will give you a treasure map.
The best flower to give on a date is the rose. Girls just love them.
I would give him a flower and a card. I would give someone that i never gives any one else.
Go to the flower shop in goldenrod city and show someone shaymin.They'll give a flower. Let shaymin hold the flower between 5am to 8pm.
he found the treasure on the island that has a mark on it.
you trade it to another game, and check it. it will possibly be in its sky form. or you can go to floroma town and look around, talk to someone and they will give you the flower.
That's extremely cliche. Don't do that.
I love your smile:)