When to plant tomatoes in Salta: 11 September – 9 March

In Salta, tomato: sow for seedlings from 30 June to 17 January; plant into a greenhouse from 21 August to 9 March; plant out into open ground from 11 September to 9 March. For plants and seeds, the places nearby include vivero (plant nursery, 2 km); addresses and opening hours are below.

Tomato in Salta: soil, season and weather

In Salta the soil, not frost, sets the date: the last frost is over around 10 August, but the top 7 cm of soil reaches 15 °C — the minimum on the tomato card — only around 11 September, 32 days later.

Last spring frost	10 August
Top 7 cm of soil at 15 °C	11 September, 32 days after the last frost
Into an unheated greenhouse	21 August – 9 March; August outside: 6.4 °C at night, 20 °C by day; card 16–27 °C
First autumn frost	29 June, 292 days after the start
Days in the bed to the first harvest (card)	70
First harvest, if planted in this window	20 November – 18 May
Days left for picking	222
Daylight	10:48 on 21 July, 11:50 on 11 September
Watering outdoors when fruiting (card)	every 3 days; the driest month, September, has 5 rainy days

Tomato in Salta: care after planting

Planted on 11 September: in the first weeks water every 4 days.

Feeding, by the card’s schedule from that day:

11 September — feed: balanced (NPK)
9 October — feed: nitrogen

Pests and diseases of tomato to watch for:

Dates count from the first planting day of the window above; a later planting moves them by as many days.

Weather in Salta during the tomato season

No month of the season averages above the tomato card's 16–27 °C by day; the warmest, January, averages 25.8 °C. Nights average below 16 °C in March–June and September–December (5.5–15.8 °C).

Month	Day, °C	Night, °C	Rain, mm	Rainy days	Daylight on the 15th
September	23	9.4	22	5	11:56
October	24.5	12.1	74	11	12:39
November	25.4	14.5	115	14	13:19
December	25.4	15.8	203	19	13:40
January	25.8	16.8	254	20	13:30
February	24.8	16.2	238	20	12:56
March	23.1	15	180	19	12:16
April	20.5	12.6	133	15	11:31
May	17.3	8.6	56	11	10:56
June	16.1	5.5	23	5	10:36

ERA5 2016–2025, Open-Meteo

Tomato in nearby cities

All the nearest cities on our list plant tomato earlier than Salta; the closest date is in Tarija, 8 days earlier.

City	Distance	Date	Difference
San Salvador de Jujuy	68 km	25 August – 4 March	17 days earlier
San Miguel de Tucumán	225 km	from 16 August	26 days earlier
Tarija	369 km	3 September – 21 February	8 days earlier
San Fernando del Valle de Catamarca	411 km	24 July – 8 March	49 days earlier
Calama	442 km	from 17 August	25 days earlier
La Rioja	533 km	7 August – 23 February	35 days earlier

Where to buy tomato plants and seeds near Salta

Buy plants ready to set out from 11 September to 9 March (from 21 August to 9 March for an unheated greenhouse); seed for raising your own is sown from 30 June to 17 January. Within 15 km of Salta OpenStreetMap lists 1 garden centre, 1 plant nursery and 5 markets (collected 27 October 2026).

vivero — plant nursery
Avenida Reyes Católicos, Salta · 2 km
Paseo Balcarce — market
Antonio Balcarce 875 · 1 km
Los Pensamientos — garden centre
14 km
Mercado San Miguel — market
1 km

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.

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