When to plant tomatoes in Puerto Montt: 9 December – 14 February

In Puerto Montt, tomato: sow for seedlings from 27 September to 24 December; plant into a greenhouse from 18 November to 14 February; plant out into open ground from 9 December to 14 February. For plants and seeds, the places nearby include Vivero Las Hortensias (garden centre, 9 km); addresses and opening hours are below.

Tomato in Puerto Montt: soil, season and weather

In Puerto Montt the soil, not frost, sets the date: the last frost is over around 22 August, but the top 7 cm of soil reaches 15 °C — the minimum on the tomato card — only around 9 December, 109 days later.

Last spring frost	22 August
Top 7 cm of soil at 15 °C	9 December, 109 days after the last frost
Into an unheated greenhouse	18 November – 14 February; November outside: 8.2 °C at night, 15.1 °C by day; card 16–27 °C
First autumn frost	5 June, 179 days after the start
Days in the bed to the first harvest (card)	70
First harvest, if planted in this window	17 February – 24 April
Days left for picking	109
Daylight	13:17 on 18 October, 15:05 on 9 December
Watering outdoors when fruiting (card)	every 3 days; the driest month, February, has 9 rainy days

Tomato in Puerto Montt: care after planting

Planted on 9 December: in the first weeks water every 4 days.

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

9 December — feed: balanced (NPK)
6 January — 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 Puerto Montt during the tomato season

No month of the season averages above the tomato card's 16–27 °C by day; the warmest, February, averages 18.7 °C. Months that stay below 16 °C even by day on average: April (14.1 °C), May (11.8 °C) and June (9.7 °C). Nights average below 16 °C in every month of the season, from 4.6 °C to 11.5 °C.

Month	Day, °C	Night, °C	Rain, mm	Rainy days	Daylight on the 15th
December	16.8	9.9	96	13	15:09
January	18.2	10.9	76	11	14:50
February	18.7	11.5	60	9	13:42
March	16.6	9.9	117	12	12:25
April	14.1	8	172	15	11:00
May	11.8	6.4	197	18	9:50
June	9.7	4.6	254	20	9:11

ERA5 2016–2025, Open-Meteo

Tomato in nearby cities

Around Puerto Montt, Los Ángeles is 40 days earlier and Bariloche 25 days later.

City	Distance	Date	Difference
Osorno	101 km	25 November – 10 February	14 days earlier
Bariloche	141 km	from 3 January	25 days later
Valdivia	186 km	18 November – 22 February	21 days earlier
Temuco	305 km	24 November – 31 January	15 days earlier
Los Ángeles	448 km	30 October – 9 February	40 days earlier
Coyhaique	461 km	from 10 December	1 day later

Where to buy tomato plants and seeds near Puerto Montt

Buy plants ready to set out from 9 December to 14 February (from 18 November to 14 February for an unheated greenhouse); seed for raising your own is sown from 27 September to 24 December. Within 15 km of Puerto Montt OpenStreetMap lists 4 garden centres, 1 plant nursery and 11 markets (collected 20 October 2026).

Vivero Las Hortensias — garden centre
Carretera Austral Km. 10, Puerto Montt · 9 km
Mercado Municipal Presidente Ibáñez — market
Avenida Presidente Ibáñez 708 · 1 km
Parque y Vivero Alerce — garden centre
10 km
Vivero All Green — garden centre
12 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