GreenlyWhen to plant zucchini in Leiria: from 12 May
In Leiria, zucchini: sow for seedlings from 31 March; plant into a greenhouse from 21 April; plant out into open ground from 12 May. There is no autumn frost here, so the frost dates set no end to the window. For plants and seeds, the places nearby include Agriloja (farm supply, 2 km) and Agro Carvalhinha (farm supply, 3 km); addresses and opening hours are below.
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Zucchini in Leiria: soil, season and weather
In Leiria the soil, not frost, sets the date: the last frost is over around 22 January, but the top 7 cm of soil reaches 18 °C — the minimum on the zucchini card — only around 12 May, 110 days later. Leiria has no autumn frost in the median year, so frost does not end the season.
| Last spring frost | 22 January |
|---|---|
| Top 7 cm of soil at 18 °C | 12 May, 110 days after the last frost |
| Days in the bed to the first harvest (card) | 36 |
| First harvest, if planted in this window | from 17 June |
| Daylight | 13:29 on 21 April, 14:15 on 12 May |
| Watering outdoors when fruiting (card) | every 3 days; the driest month, August, has 1 rainy day |
The same dates in Leiria hold for Cucumber, Bell Pepper, Eggplant, Pumpkin and Watermelon.
Zucchini in Leiria: care after planting
Planted on 12 May: in the first weeks water every 4 days.
Pests and diseases of zucchini to watch for:
Weather in Leiria during the zucchini season
About 269 mm of rain falls in the season; August is the driest month (6 mm) and October the wettest (114 mm).
| Month | Day, °C | Night, °C | Rain, mm | Rainy days | Daylight on the 15th |
|---|---|---|---|---|---|
| May | 22 | 11.8 | 57 | 9 | 14:21 |
| June | 24.1 | 14.1 | 46 | 9 | 14:58 |
| July | 27 | 15.6 | 9 | 3 | 14:44 |
| August | 27.7 | 15.7 | 6 | 1 | 13:46 |
| September | 25.9 | 14.6 | 37 | 6 | 12:30 |
| October | 22.8 | 13.4 | 114 | 11 | 11:12 |
ERA5 2016–2025, Open-Meteo
Zucchini in nearby cities
Around Leiria, Castelo Branco is 12 days earlier and Viseu 15 days later.
Where to buy zucchini plants and seeds near Leiria
Buy plants ready to set out from 12 May (from 21 April for an unheated greenhouse); seed for raising your own is sown from 31 March. Within 15 km of Leiria OpenStreetMap lists 2 garden centres, 4 farm-supply shops, 2 plant nurseries and 8 markets (collected 27 October 2026).
- My Garden — garden centre
IC2 km107.7 30, 2480-060 Porto de Mós · 13 km - Agriloja — farm supply
Rua da Cooperativa 2, 2410-262 Leiria · Mon–Sat 08:30–20:00; Sun 09:00–13:00 · 2 km · agriloja.pt - JardiRega — farm supply
Rua das Cancelas 24, 2440-015 Batalha · Mon–Fri 09:00–13:00, 14:00–18:00 · 10 km · jardirega.pt - Agro Carvalhinha — farm supply
Rua Padre José de Sousa e Silva 1014, 2410-485 Barreira · 3 km
Places: © OpenStreetMap contributors, ODbL.
- How to grow zucchini
- All frost dates and weather of Leiria
- Shops and markets: Leiria
- Selling a surplus in Portugal
- Moon planting calendar for November 2026
- How we calculate the dates
Questions
When to plant zucchini in Leiria?
In Leiria, zucchini: sow for seedlings from 31 March; plant into a greenhouse from 21 April; plant out into open ground from 12 May. There is no autumn frost here, so the frost dates set no end to the window.
When to sow zucchini for seedlings in Leiria?
Sow for seedlings from 31 March.
