What type of flowers mean "Good Luck"?

My older sister is opening a coffee shop next week. It is a dream she has had for a while - (she is a Grandmother), to run her own business. She had ran into a lot of problems getting it started, but stuck it out.



I want to send her some flowers for Good Luck. She is a couple of states away from me and I'm not able to travel for her Grand-opening.

What type of flowers mean "Good Luck"?
Send her a clover plant (clover is for luck). You might have to call a local nursery to see if they carry oxalis and you could put it in a lovely pot. Sometimes you can get it delivered from the major florists for St. Patrick's day but I just checked a bunch and didn't have any success in finding it. You might call your local florists to see if they could get if for you. Another lucky flower is Bells of Ireland.



This wreath has clover in it:



http://products.proflowers.com/wreath/ex...



Edited to add: Here is a picture of what I mean in terms of the plant. They look so cute in the right pot!



http://www.willowcreekgardens.com/index....