GreenlyWhen to plant pumpkins in Posadas: from 25 July
In Posadas, pumpkin: sow for seedlings from 23 May; plant into a greenhouse from 4 July; plant out into open ground from 25 July. There is no autumn frost here, so the frost dates set no end to the window.
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Pumpkin in Posadas: soil, season and weather
In Posadas frost, not soil, sets the date: the top 7 cm of soil warms to 18 °C — the minimum on the pumpkin card — around 19 July, 1 day after the last frost on 18 July, so planting waits only for the week after that frost. Posadas has no autumn frost in the median year, so frost does not end the season.
| Last spring frost | 18 July |
|---|---|
| Top 7 cm of soil at 18 °C | 19 July, 1 day after the last frost |
| Days in the bed to the first harvest (card) | 75 |
| First harvest, if planted in this window | from 8 October |
| Daylight | 10:26 on 13 June, 10:42 on 25 July |
| Watering outdoors when fruiting (card) | every 5 days; the driest month, July, has 6 rainy days |
The same dates in Posadas hold for Tomato, Cucumber, Bell Pepper, Eggplant, Zucchini and Watermelon.
Pumpkin in Posadas: care after planting
Planted on 25 July: in the first weeks water every 4 days.
Feeding, by the card’s schedule from that day:
- 15 August — feed: nitrogen
Pests and diseases of pumpkin to watch for:
- Bacterial wilt of cucurbits
- Squash bug
- Cucumber beetles
- Blossom-end rot
- Leaf Curl Virus
- Verticillium wilt
Dates count from the first planting day of the window above; a later planting moves them by as many days.
Weather in Posadas during the pumpkin season
About 860 mm of rain falls in the season; July is the driest month (80 mm) and October the wettest (224 mm).
| Month | Day, °C | Night, °C | Rain, mm | Rainy days | Daylight on the 15th |
|---|---|---|---|---|---|
| July | 21.2 | 11.8 | 80 | 6 | 10:34 |
| August | 22.8 | 12.7 | 91 | 7 | 11:08 |
| September | 25.2 | 15.1 | 138 | 9 | 11:54 |
| October | 26.6 | 17 | 224 | 13 | 12:43 |
| November | 28.8 | 18.5 | 193 | 11 | 13:28 |
| December | 30.7 | 20.6 | 134 | 11 | 13:51 |
ERA5 2016–2025, Open-Meteo
Pumpkin in nearby cities
1 of the nearest cities share Posadas's date.
| City | Distance | Date | Difference |
|---|---|---|---|
| Santa Maria | 328 km | 14 August – 16 February | 20 days later |
| Chapecó | 328 km | 12 September – 27 February | 49 days later |
| Passo Fundo | 358 km | 8 September – 21 February | 45 days later |
| Cascavel | 365 km | 25 July – 3 March | same day |
| Rivera | 392 km | 28 September – 13 February | 65 days later |
| Tacuarembó | 480 km | 14 October – 17 February | 81 days later |
Where to buy pumpkin plants and seeds near Posadas
Buy plants ready to set out from 25 July (from 4 July for an unheated greenhouse); seed for raising your own is sown from 23 May. Within 15 km of Posadas OpenStreetMap lists 8 garden centres, 1 farm-supply shop, 3 plant nurseries and 24 markets (collected 27 October 2026).
- Feria Franca Miguel Lanús — market
Avenida Juan Domingo Perón 1900, 3304 MIguel Lanús · Wed 06:00–12:00; Sat 06:00–12:00 · 6 km - Feria Franca de Itaembé Guazú — market
Las Magnolias 10400, 3300 Posadas · Sun 14:00+ · 6 km - Feria Franca Barrio Los Álamos — market
Las Azaleas, 3300 Posadas · Sat 06:00–12:00 · 3 km - Vivero — garden centre
2 km
Places: © OpenStreetMap contributors, ODbL.
- How to grow pumpkin
- All frost dates and weather of Posadas
- Shops and markets: Posadas
- Selling a surplus in Argentina
- Moon planting calendar for November 2026
- How we calculate the dates
Questions
When to plant pumpkins in Posadas?
In Posadas, pumpkin: sow for seedlings from 23 May; plant into a greenhouse from 4 July; plant out into open ground from 25 July. There is no autumn frost here, so the frost dates set no end to the window.
When to sow pumpkins for seedlings in Posadas?
Sow for seedlings from 23 May.
