GreenlyWhen to plant tomatoes in Japan: 31 March – 5 September
Tomato in Japan: plant out into open ground from 31 March to 5 September.
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 | Tokyo, Osaka, Fukuoka, Niigata, Hamamatsu, Okayama, Kagoshima | 31 March – 5 September |
| 210–269 frost-free days | Nagoya, Kyoto, Hiroshima, Sendai, Kumamoto | 2 April – 20 August |
| 150–209 frost-free days | Sapporo | 30 June – 8 August |
| Frost without a regular season | Kitakyushu | from 14 April |
Tomato: the window in each city
| City | Window | Zone |
|---|---|---|
| Kagoshima | 31 March – 5 September | 270 frost-free days or more |
| Kumamoto | 2 April – 13 August | 210–269 frost-free days |
| Tokyo | 4 April – 24 August | 270 frost-free days or more |
| Hamamatsu | 5 April – 28 August | 270 frost-free days or more |
| Fukuoka | 7 April – 31 August | 270 frost-free days or more |
| Nagoya | 12 April – 20 August | 210–269 frost-free days |
| Kitakyushu | from 14 April | Frost without a regular season |
| Osaka | 15 April – 27 August | 270 frost-free days or more |
| Kyoto | 21 April – 17 August | 210–269 frost-free days |
| Okayama | 21 April – 25 August | 270 frost-free days or more |
| Hiroshima | 5 May – 5 August | 210–269 frost-free days |
| Niigata | 5 May – 30 August | 270 frost-free days or more |
| Sendai | 13 May – 3 August | 210–269 frost-free days |
| Sapporo | 30 June – 8 August | 150–209 frost-free days |
