I want to buy flowers for a female friend I like to let her know I like her?

Hey everyone - I would like some help on a dating subject. I am a late 20's male with a mid 20's female friend that I have a crush on, but I am not ready to ask her out. She is looking at the possibility of moving out of state in April, but I want her to know that there is someone here that is interested in her. She doesn't know that I currently have a romantic interest in her.

I was planning on sending flowers to her workplace (She works at a hospital) and have a note attached that said "From a friend that admires you" or "Surprise - You have a friend that thinks you are awesome!"

Would this be appropriate - more importantly do you think that she would like the surprise and start trying to find out who sent them? I primarily want to see her reaction to receiving the flowers.

Please help! I would enjoy the thoughts of a woman on this!!