When looking through the 534 "Mum" images at Acclaim Images.com this Autumn Florist Sales Stand was a favorite.
All of their pictures are hand picked, availiable in a number of formats, and you can even get custom prints and posters.

Description:
Autumn Florist Sales Stand
Stock image of fall mums for sale at florist's shop on outdoor display. Nov. 2006

Some related terms for more images:
potted plants,  greenhouse,  mums,  for sale,  flowers,  beth conant,  florists,  greenhouses,  display,  sales,