I first realized the power of flowers decades ago when I had a temporary job working in a chaotic department where everyone was overworked and stressed.  There was one lady who seemed especially difficult to work with and some not-so-nice things were usually said about her. She usually held up the work flow by living up to her reputation.  One day,  I noticed this guy from another department who, after imploring her several times without success threw up his hands and left.  The next day he came back.  But this time he brought her a bouquet of red roses.  Well, it worked.  Her normally dour disposition melted away and she became all smiles.   When he left, he had the document he had been trying to get for days without success.