In order to participate in the competition, a community must register with Communities in Bloom, and submit a payment dependent on the community's population. The payment also depends on whether the community participates in the provincial or national competition.
The competition is divided into eight criteria:
Each community is judged on their capacity to improve the community in these categories. Communities are awarded a Bloom Rating based on its achievements from one to five. Each community is also recognized for achievement in a particular area or through a specific initiative.
Category awards are also given for communities that show great strength in one category in particular.
| Year | City |
|---|---|
| 1995 | |
| Saint John, NB | |
| 1997 | St. John's, NF |
| 1999 | Halifax, NS |
| 2000 | Edmonton, AB |
| Charlottetown, PEI | |
| Saskatoon, SK | |
| Kelowna, BC | |
| Stratford, ON | |
| Brandon, MB | |
| 2007 | Moncton, NB |
| 2008 | Lethbridge, AB |
| 2009 | Vaughn, ON |
| 2010 | Halifax, NS |