GreenlyWhen to plant tomatoes in Curitiba: from 26 July
In Curitiba, tomato: sow for seedlings from 14 May; plant into a greenhouse from 5 July; plant out into open ground from 26 July. There is no autumn frost here, so the frost dates set no end to the window. For plants and seeds, the places nearby include Horto Municipal do Guabirotuba (plant nursery, 4 km) and Leroy Merlin (garden centre, 5 km); addresses and opening hours are below.
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Tomato in Curitiba: soil, season and weather
In Curitiba frost, not soil, sets the date: the top 7 cm of soil warms to 15 °C — the minimum on the tomato card — around 16 July, 3 days before the last frost on 19 July, so planting waits only for the week after that frost. Curitiba has no autumn frost in the median year, so frost does not end the season.
| Last spring frost | 19 July |
|---|---|
| Top 7 cm of soil at 15 °C | 16 July, 3 days before the last frost |
| Into an unheated greenhouse | from 5 July; July outside: 9.4 °C at night, 19.2 °C by day; card 16–27 °C |
| Days in the bed to the first harvest (card) | 70 |
| First harvest, if planted in this window | from 4 October |
| Daylight | 10:38 on 4 June, 10:50 on 26 July |
| Watering outdoors when fruiting (card) | every 3 days; the driest month, July, has 6 rainy days |
Tomato in Curitiba: care after planting
Planted on 26 July: in the first weeks water every 4 days.
Feeding, by the card’s schedule from that day:
- 26 July — feed: balanced (NPK)
- 23 August — feed: nitrogen
Pests and diseases of tomato to watch for:
- Bacterial canker of tomato
- Tomato leaf mould
- Late Blight
- Bacterial spot
- Fruit cracking
- Bacterial wilt (brown rot of potato)
Dates count from the first planting day of the window above; a later planting moves them by as many days.
Weather in Curitiba during the tomato season
No month of the season averages above the tomato card's 16–27 °C by day; the warmest, December, averages 25.4 °C. Nights average below 16 °C in July–November (9.4–14.7 °C).
| Month | Day, °C | Night, °C | Rain, mm | Rainy days | Daylight on the 15th |
|---|---|---|---|---|---|
| July | 19.2 | 9.4 | 44 | 6 | 10:41 |
| August | 20 | 10.3 | 91 | 8 | 11:13 |
| September | 22.6 | 12.7 | 105 | 10 | 11:55 |
| October | 22.4 | 14 | 172 | 18 | 12:40 |
| November | 23.4 | 14.7 | 121 | 17 | 13:21 |
| December | 25.4 | 16.8 | 162 | 21 | 13:43 |
ERA5 2016–2025, Open-Meteo
Tomato in nearby cities
Around Curitiba, Cascavel is 1 day earlier and Lages 26 days later.
| City | Distance | Date | Difference |
|---|---|---|---|
| Ponta Grossa | 97 km | 26 July – 4 March | same day |
| Guarapuava | 221 km | 12 August – 3 March | 17 days later |
| Lages | 286 km | 21 August – 3 March | 26 days later |
| Chapecó | 382 km | 10 August – 3 March | 15 days later |
| Cascavel | 425 km | 25 July – 8 March | 1 day earlier |
| Passo Fundo | 443 km | 26 July – 26 February | same day |
Where to buy tomato plants and seeds near Curitiba
Buy plants ready to set out from 26 July (from 5 July for an unheated greenhouse); seed for raising your own is sown from 14 May. Within 15 km of Curitiba OpenStreetMap lists 3 garden centres, 2 farm-supply shops, 1 plant nursery, 31 markets and 2 farm shops (collected 20 October 2026).
- Casa das Plantas — garden centre
Avenida Cândido Hartmann 4405 · 6 km · casadasplantas.com.br - Leroy Merlin — garden centre
Avenida Presidente Wenceslau Braz 88, 81030-030 · 5 km - Flora Quatro Elementos — garden centre
Rua Joaquim Nabuco 702, 83040-210 São José dos Pinhais · 12 km - Horto Municipal do Guabirotuba — plant nursery
Avenida Senador Salgado Filho 1050 · 4 km
Places: © OpenStreetMap contributors, ODbL.
- How to grow tomato
- All frost dates and weather of Curitiba
- Shops and markets: Curitiba
- When to plant tomatoes in Brazil
- Moon planting calendar for November 2026
- How we calculate the dates
Questions
When to plant tomatoes in Curitiba?
In Curitiba, tomato: sow for seedlings from 14 May; plant into a greenhouse from 5 July; plant out into open ground from 26 July. There is no autumn frost here, so the frost dates set no end to the window.
When to sow tomatoes for seedlings in Curitiba?
Sow for seedlings from 14 May.
