When to plant tomatoes in Osorno: 25 November – 10 February

In Osorno, tomato: sow for seedlings from 13 September to 20 December; plant into a greenhouse from 4 November to 10 February; plant out into open ground from 25 November to 10 February.

Tomato in Osorno: soil, season and weather

In Osorno the soil, not frost, sets the date: the last frost is over around 15 September, but the top 7 cm of soil reaches 15 °C — the minimum on the tomato card — only around 25 November, 71 days later.

Last spring frost	15 September
Top 7 cm of soil at 15 °C	25 November, 71 days after the last frost
Into an unheated greenhouse	4 November – 10 February; November outside: 7.7 °C at night, 17.4 °C by day; card 16–27 °C
First autumn frost	1 June, 189 days after the start
Days in the bed to the first harvest (card)	70
First harvest, if planted in this window	3 February – 20 April
Days left for picking	119
Daylight	12:38 on 4 October, 14:41 on 25 November
Watering outdoors when fruiting (card)	every 3 days; the driest month, January, has 5 rainy days

Tomato in Osorno: care after planting

Planted on 25 November: in the first weeks water every 4 days.

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

25 November — feed: balanced (NPK)
23 December — 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 Osorno during the tomato season

No month of the season averages above the tomato card's 16–27 °C by day; the warmest, February, averages 23.1 °C. Months that stay below 16 °C even by day on average: April (15.9 °C), May (12.9 °C) and June (10.6 °C). Nights average below 16 °C in every month of the season, from 3.8 °C to 11.2 °C.

Month	Day, °C	Night, °C	Rain, mm	Rainy days	Daylight on the 15th
November	17.4	7.7	65	10	14:22
December	20	9.3	54	7	15:03
January	22.4	10.5	30	5	14:45
February	23.1	11.2	31	5	13:39
March	19.7	9.3	75	8	12:24
April	15.9	7.4	110	12	11:02
May	12.9	5.5	139	14	9:54
June	10.6	3.8	203	17	9:17

ERA5 2016–2025, Open-Meteo

Tomato in nearby cities

Around Osorno, Los Ángeles is 26 days earlier and Bariloche 39 days later.

City	Distance	Date	Difference
Valdivia	85 km	18 November – 22 February	7 days earlier
Puerto Montt	101 km	9 December – 14 February	14 days later
Bariloche	166 km	from 3 January	39 days later
Temuco	208 km	24 November – 31 January	1 day earlier
Los Ángeles	351 km	30 October – 9 February	26 days earlier
Concepción	416 km	8 November – 21 February	17 days earlier

Where to buy tomato plants and seeds near Osorno

Buy plants ready to set out from 25 November to 10 February (from 4 November to 10 February for an unheated greenhouse); seed for raising your own is sown from 13 September to 20 December. Within 15 km of Osorno OpenStreetMap lists 1 plant nursery and 3 markets (collected 27 October 2026).

Huerto Comunitario "Amore" — plant nursery
3 km
Mercado Municipal de Rahue — market
2 km
Mercado Municipal — market
0 km
Feria Libre Pedro Aguirre Cerda — market
2 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