GreenlyWhen to plant tomatoes in Maldonado: from 10 September
In Maldonado, tomato: sow for seedlings from 29 June; plant into a greenhouse from 20 August; plant out into open ground from 10 September. There is no autumn frost here, so the frost dates set no end to the window. For plants and seeds, the places nearby include Explora Vivero (garden centre, 14 km) and Vivero (garden centre, 15 km); addresses and opening hours are below.
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Tomato in Maldonado: soil, season and weather
In Maldonado the soil, not frost, sets the date: the last frost is over around 15 July, but the top 7 cm of soil reaches 15 °C — the minimum on the tomato card — only around 10 September, 57 days later. Maldonado has no autumn frost in the median year, so frost does not end the season.
| Last spring frost | 15 July |
|---|---|
| Top 7 cm of soil at 15 °C | 10 September, 57 days after the last frost |
| Into an unheated greenhouse | from 20 August; August outside: 9.2 °C at night, 15.6 °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 19 November |
| Daylight | 10:07 on 20 July, 11:40 on 10 September |
| Watering outdoors when fruiting (card) | every 3 days; the driest month, September, has 8 rainy days |
Tomato in Maldonado: care after planting
Planted on 10 September: in the first weeks water every 4 days.
Feeding, by the card’s schedule from that day:
- 10 September — feed: balanced (NPK)
- 8 October — 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 Maldonado during the tomato season
No month of the season averages above the tomato card's 16–27 °C by day; the warmest, January, averages 26.2 °C. Nights average below 16 °C in September (10.5 °C), October (12.4 °C) and November (15 °C).
| Month | Day, °C | Night, °C | Rain, mm | Rainy days | Daylight on the 15th |
|---|---|---|---|---|---|
| September | 16.8 | 10.5 | 66 | 8 | 11:51 |
| October | 19 | 12.4 | 88 | 9 | 12:56 |
| November | 22.3 | 15 | 73 | 8 | 13:56 |
| December | 24.6 | 17.3 | 76 | 9 | 14:29 |
| January | 26.2 | 19.1 | 105 | 8 | 14:15 |
| February | 26 | 19.4 | 90 | 10 | 13:21 |
ERA5 2016–2025, Open-Meteo
Tomato in nearby cities
Around Maldonado, Paysandú is 45 days earlier and Mar del Plata 38 days later.
| City | Distance | Date | Difference |
|---|---|---|---|
| Colonia del Sacramento | 269 km | from 19 August | 22 days earlier |
| La Plata | 274 km | 19 September – 25 February | 9 days later |
| Buenos Aires | 315 km | from 2 September | 8 days earlier |
| Tacuarembó | 367 km | 28 July – 22 February | 44 days earlier |
| Paysandú | 408 km | 27 July – 6 March | 45 days earlier |
| Mar del Plata | 416 km | from 18 October | 38 days later |
Where to buy tomato plants and seeds near Maldonado
Buy plants ready to set out from 10 September (from 20 August for an unheated greenhouse); seed for raising your own is sown from 29 June. Within 15 km of Maldonado OpenStreetMap lists 13 garden centres, 2 plant nurseries, 8 markets and 1 farm shop (collected 27 October 2026).
- Explora Vivero — garden centre
Avenida José Frade, San Carlos · Mon–Sat 08:00–17:00 · 14 km · exploravivero.com - Vivero — garden centre
Mon, Thu–Sun 14:00–18:00 · 15 km - Predio Ferial Inve — market
Alfredo Chiossi esquina Héctor Gutierrez Ruiz, 20000 Maldonado · Wed 09:00–14:30 · 2 km - Galería Sagasti — market
Gorlero · 7 km
Places: © OpenStreetMap contributors, ODbL.
- How to grow tomato
- All frost dates and weather of Maldonado
- Shops and markets: Maldonado
- Selling a surplus in Uruguay
- When to plant tomatoes in Uruguay
- Moon planting calendar for November 2026
- How we calculate the dates
Questions
When to plant tomatoes in Maldonado?
In Maldonado, tomato: sow for seedlings from 29 June; plant into a greenhouse from 20 August; plant out into open ground from 10 September. There is no autumn frost here, so the frost dates set no end to the window.
When to sow tomatoes for seedlings in Maldonado?
Sow for seedlings from 29 June.
