GreenlyWhen to plant tomatoes in Canada: 14 May – 31 August
Tomato in Canada: plant out into open ground from 14 May to 31 August.
Each window starts on the Greenly calendar date and ends on the last day that still leaves the crop’s days to harvest (from its card) before the average first autumn frost, plus six weeks of picking for crops harvested over weeks (tomatoes, peppers, aubergines, cucumbers, courgettes, pumpkins, watermelons, beans) — our rule; earlier in the window is safer.
Planting window by climate zone
| Zone | Cities | Window |
|---|---|---|
| 270 frost-free days or more | Victoria | 14 May – 31 August |
| 210–269 frost-free days | Vancouver | 28 May – 28 July |
| 150–209 frost-free days | Toronto, Montreal, Ottawa, Winnipeg, Edmonton, Quebec City, Halifax, Sherbrooke, Trois-Rivières, Saguenay, Hamilton, London (Canada), Gatineau, Kitchener, Windsor, Kelowna, St. John's, Thunder Bay, Moncton, Fredericton, Charlottetown | 14 May – 21 July |
| Short season: under 150 frost-free days | Calgary, Saskatoon, Regina, Whitehorse, Yellowknife, Iqaluit | 24 May – 26 July |
Tomato: the window in each city
| City | Window | Zone |
|---|---|---|
| Victoria | 14 May – 31 August | 270 frost-free days or more |
| Windsor | 14 May – 18 July | 150–209 frost-free days |
| Hamilton | 19 May – 18 July | 150–209 frost-free days |
| Kelowna | 19 May – 11 July | 150–209 frost-free days |
| London (Canada) | 19 May – 18 July | 150–209 frost-free days |
| Toronto | 20 May – 10 July | 150–209 frost-free days |
| Montreal | 21 May – 12 July | 150–209 frost-free days |
| Kitchener | 22 May – 6 July | 150–209 frost-free days |
| Regina | 24 May – 16 June | Short season: under 150 frost-free days |
| Winnipeg | 24 May – 22 June | 150–209 frost-free days |
| Trois-Rivières | 25 May – 9 July | 150–209 frost-free days |
| Gatineau | 27 May – 12 July | 150–209 frost-free days |
| Ottawa | 27 May – 12 July | 150–209 frost-free days |
| Quebec City | 27 May – 8 July | 150–209 frost-free days |
| Sherbrooke | 27 May – 7 July | 150–209 frost-free days |
| Vancouver | 28 May – 28 July | 210–269 frost-free days |
| Saskatoon | 30 May – 16 June | Short season: under 150 frost-free days |
| Calgary | 3 June – 11 June | Short season: under 150 frost-free days |
| Edmonton | 3 June – 16 June | 150–209 frost-free days |
| Fredericton | 5 June – 8 July | 150–209 frost-free days |
| Moncton | 9 June – 15 July | 150–209 frost-free days |
| Saguenay | 10 June – 2 July | 150–209 frost-free days |
| Charlottetown | 13 June – 13 July | 150–209 frost-free days |
| Halifax | 19 June – 20 July | 150–209 frost-free days |
| Thunder Bay | 22 June – 3 July | 150–209 frost-free days |
| Yellowknife | 22 June – 26 July | Short season: under 150 frost-free days |
| Iqaluit | 25 June – 25 June | Short season: under 150 frost-free days |
| St. John's | 26 June – 21 July | 150–209 frost-free days |
| Whitehorse | 29 June – 20 July | Short season: under 150 frost-free days |
