When to plant tomatoes in Trelew: 7 October – 6 February

In Trelew, tomato: sow for seedlings from 26 July to 16 December; plant into a greenhouse from 16 September to 6 February; plant out into open ground from 7 October to 6 February.

Tomato in Trelew: soil, season and weather

In Trelew the soil, not frost, sets the date: the last frost is over around 29 August, but the top 7 cm of soil reaches 15 °C — the minimum on the tomato card — only around 7 October, 39 days later.

Last spring frost	29 August
Top 7 cm of soil at 15 °C	7 October, 39 days after the last frost
Into an unheated greenhouse	16 September – 6 February; September outside: 6.5 °C at night, 17.7 °C by day; card 16–27 °C
First autumn frost	28 May, 234 days after the start
Days in the bed to the first harvest (card)	70
First harvest, if planted in this window	16 December – 16 April
Days left for picking	164
Daylight	10:23 on 16 August, 12:50 on 7 October
Watering outdoors when fruiting (card)	every 3 days; the driest month, February, has 2 rainy days

Tomato in Trelew: care after planting

Planted on 7 October: in the first weeks water every 4 days.

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

7 October — feed: balanced (NPK)
4 November — 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 Trelew during the tomato season

Days average above the tomato card's 16–27 °C in December (27.6 °C), January (29.3 °C) and February (28.2 °C). Months that stay below 16 °C even by day on average: May (15.4 °C). Nights average below 16 °C in February–May and October–December (5.7–15.4 °C).

Month	Day, °C	Night, °C	Rain, mm	Rainy days	Daylight on the 15th
October	21.3	9.2	14	4	13:13
November	25	12.2	26	5	14:36
December	27.6	14.3	19	4	15:22
January	29.3	16	15	3	15:02
February	28.2	15.4	11	2	13:48
March	25.2	13.2	24	4	12:26
April	20.3	9.7	26	4	10:56
May	15.4	5.7	14	3	9:41

ERA5 2016–2025, Open-Meteo

Tomato in nearby cities

Around Trelew, Neuquén is 15 days earlier and Bariloche 88 days later.

City	Distance	Date	Difference
Comodoro Rivadavia	338 km	15 October – 1 February	8 days later
Neuquén	531 km	22 September – 17 February	15 days earlier
Bariloche	546 km	from 3 January	88 days later
Bahía Blanca	565 km	23 September – 23 February	14 days earlier
Coyhaique	595 km	from 10 December	64 days later
Puerto Montt	657 km	9 December – 14 February	63 days later

Where to buy tomato plants and seeds near Trelew

Buy plants ready to set out from 7 October to 6 February (from 16 September to 6 February for an unheated greenhouse); seed for raising your own is sown from 26 July to 16 December. Within 15 km of Trelew OpenStreetMap lists 1 plant nursery and 4 markets (collected 28 October 2026).

Área de Fitorremediación — plant nursery
7 km
Kiosco Mercado "Elliot" — market
1 km
Mercado Amiel — market
1 km
Mercado Avenida — 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.

Questions