The point is, don't EVER send flowers for no reason, it makes you look guilty. It's a pet theory I picked up from other women and personal observations. If a guy sends flowers for no reason, he's most likely feeling guilty about something he did. Especially if he sends flowers while he's out of town on business.
Remember boys, no flowers unless you definitely have a reason and put that reason on the card. If you want to do something for no reason, candy or jewelry is the better way to go. Or just take her out for nice dinner or to someplace special if you want to do something for no reason.
Just leave a note on the pillow when you leave for work, telling her how much you love her and appreciate her. Boy, it works better than a $100 dinner and a bottle of wine!