GreenlyWhen to plant tomatoes in Calama: from 17 August
In Calama, tomato: sow for seedlings from 5 June; plant into a greenhouse from 27 July; plant out into open ground from 17 August. There is no autumn frost here, so the frost dates set no end to the window. For plants and seeds, the places nearby include vivero terra nostra (garden centre, 6 km) and vivero nicolas (garden centre, 6 km); addresses and opening hours are below.
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Tomato in Calama: soil, season and weather
In Calama frost, not soil, sets the date: the top 7 cm of soil warms to 15 °C — the minimum on the tomato card — around 17 July, 24 days before the last frost on 10 August, so planting waits only for the week after that frost. Calama has no autumn frost in the median year, so frost does not end the season.
| Last spring frost | 10 August |
|---|---|
| Top 7 cm of soil at 15 °C | 17 July, 24 days before the last frost |
| Into an unheated greenhouse | from 27 July; July outside: 7.1 °C at night, 21.5 °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 26 October |
| Daylight | 10:46 on 26 June, 11:22 on 17 August |
| Watering outdoors when fruiting (card) | every 3 days; the driest month, September, has 0 rainy days |
Tomato in Calama: care after planting
Planted on 17 August: in the first weeks water every 4 days.
Feeding, by the card’s schedule from that day:
- 17 August — feed: balanced (NPK)
- 14 September — 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 Calama 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 °C. Nights average below 16 °C in every month of the season, from 6.6 °C to 10.5 °C.
| Month | Day, °C | Night, °C | Rain, mm | Rainy days | Daylight on the 15th |
|---|---|---|---|---|---|
| August | 21.9 | 6.6 | 3 | 0 | 11:20 |
| September | 23.6 | 7.8 | 0 | 0 | 11:57 |
| October | 24.4 | 8.4 | 0 | 0 | 12:35 |
| November | 24.8 | 8.8 | 0 | 0 | 13:11 |
| December | 25 | 9.5 | 1 | 0 | 13:30 |
| January | 24.8 | 10.5 | 2 | 1 | 13:22 |
ERA5 2016–2025, Open-Meteo
Tomato in nearby cities
Around Calama, Sucre is 5 days earlier and Potosí 103 days later.
| City | Distance | Date | Difference |
|---|---|---|---|
| San Salvador de Jujuy | 418 km | 25 August – 4 March | 8 days later |
| Salta | 442 km | 11 September – 9 March | 25 days later |
| Tarija | 445 km | 3 September – 21 February | 17 days later |
| Potosí | 460 km | from 28 November | 103 days later |
| Oruro | 535 km | 3 October – 8 January | 47 days later |
| Sucre | 539 km | 12 August – 10 March | 5 days earlier |
Where to buy tomato plants and seeds near Calama
Buy plants ready to set out from 17 August (from 27 July for an unheated greenhouse); seed for raising your own is sown from 5 June. Within 15 km of Calama OpenStreetMap lists 2 garden centres and 2 markets (collected 28 October 2026).
- vivero terra nostra — garden centre
Ojo de Opache cascada ojoopache, calama · Mon–Sun 09:00–21:00 · 6 km - vivero nicolas — garden centre
Ojo de Opache 13, calama · 6 km - Feria Modelo — market
Antofagasta 1938, Calama · Mon–Sat 08:30–18:00 · 1 km - Terminal Agropecuario de Calama — market
Almirante Grau 1158, Calama · Mon–Sat 06:00–14:00 · 2 km
Places: © OpenStreetMap contributors, ODbL.
- How to grow tomato
- All frost dates and weather of Calama
- Shops and markets: Calama
- Selling a surplus in Chile
- When to plant tomatoes in Chile
- Moon planting calendar for November 2026
- How we calculate the dates
Questions
When to plant tomatoes in Calama?
In Calama, tomato: sow for seedlings from 5 June; plant into a greenhouse from 27 July; plant out into open ground from 17 August. There is no autumn frost here, so the frost dates set no end to the window.
When to sow tomatoes for seedlings in Calama?
Sow for seedlings from 5 June.
