| ZONE |
AVERAGE LAST FROST DATE |
AVERAGE FIRST FROST DATE |
| Zone 3 |
1 May / 31 May |
1 Sep / 30 Sep |
| Zone 4 |
1 May / 30 May |
1 Sep / 30 Sep |
| Zone 5 |
30 Mar / 30 Apr |
30 Sep / 30 Oct |
| Zone 6 |
30 Mar / 30 Apr |
30 Sep / 30 Oct |
| Zone 7 |
30 Mar / 30 Apr |
30 Sep / 30 Oct |
| Zone 8 |
28 Feb / 30 Mar |
30 Oct / 30 Nov |
| Zone 9 |
30 Jan / 28 Feb |
30 Nov / 30 Dec |
| Zone 10 |
30 Jan or before |
30 Nov / 30 Dec |
| Zone 11 |
Free of Frost throughout the year. |
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