When to plant watermelons in Talca: 6 November – 3 March

In Talca, watermelon: sow for seedlings from 18 September to 4 February; plant into a greenhouse from 16 October to 3 March; plant out into open ground from 6 November to 3 March. For plants and seeds, the places nearby include Vivero Oasis (plant nursery, 9 km); addresses and opening hours are below.

Watermelon in Talca: soil, season and weather

In Talca the soil, not frost, sets the date: the last frost is over around 21 August, but the top 7 cm of soil reaches 18 °C — the minimum on the watermelon card — only around 6 November, 77 days later.

Last spring frost	21 August
Top 7 cm of soil at 18 °C	6 November, 77 days after the last frost
Into an unheated greenhouse	16 October – 3 March; October outside: 7.3 °C at night, 20.3 °C by day; card 18–35 °C
First autumn frost	12 June, 219 days after the start
Days in the bed to the first harvest (card)	59
First harvest, if planted in this window	4 January – 1 May
Days left for picking	160
Daylight	12:43 on 9 October, 13:42 on 6 November
Watering outdoors when fruiting (card)	every 5 days; the driest month, February, has 1 rainy day

The same dates in Talca hold for Cucumber, Bell Pepper, Eggplant, Zucchini and Pumpkin.

Watermelon in Talca: care after planting

Planted on 6 November: in the first weeks water every 5 days.

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

6 November — feed: balanced (NPK)

Pests and diseases of watermelon 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 Talca during the watermelon season

No month of the season averages above the watermelon card's 18–35 °C by day; the warmest, January, averages 30.5 °C. Months that stay below 18 °C even by day on average: May (15.3 °C) and June (12.7 °C). Nights average below 18 °C in every month of the season, from 4.5 °C to 14.4 °C.

Month	Day, °C	Night, °C	Rain, mm	Rainy days	Daylight on the 15th
November	25.1	10.2	17	2	13:59
December	28.7	12.8	5	1	14:32
January	30.5	14.4	11	1	14:17
February	30	14.3	4	1	13:23
March	26.9	12	7	1	12:21
April	20.7	8.8	47	5	11:13
May	15.3	6.2	95	8	10:17
June	12.7	4.5	156	11	9:47

ERA5 2016–2025, Open-Meteo

Watermelon in nearby cities

Around Talca, Santiago is 23 days earlier and Concepción 30 days later.

City	Distance	Date	Difference
Curicó	61 km	31 October – 26 February	6 days earlier
Chillán	138 km	14 November – 2 March	8 days later
Rancagua	162 km	6 November – 2 March	same day
Concepción	201 km	6 December – 3 March	30 days later
Los Ángeles	236 km	23 November – 20 February	17 days later
Santiago	237 km	14 October – 8 March	23 days earlier

Where to buy watermelon plants and seeds near Talca

Buy plants ready to set out from 6 November to 3 March (from 16 October to 3 March for an unheated greenhouse); seed for raising your own is sown from 18 September to 4 February. Within 15 km of Talca OpenStreetMap lists 1 garden centre, 2 plant nurseries, 8 markets and 1 farm shop (collected 27 October 2026).

Vivero Oasis — plant nursery
Cruce Avenida Circunvalación Río Claro (Talca) - Curepto - Cruce K-16 (Monte Grande), Talca · 9 km
Mercado de Talca — market
Calle 2 Norte, Talca · 1 km
A&S Minimarket — market
17 Norte 2380 · 1 km
Locales de Feria — market
Avenida San Miguel, Huilquilemu · 8 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