GreenlyWhen to plant zucchini in Coimbra: from 12 May
In Coimbra, 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 Tradição Loja Agrícola (farm supply, 1 km) and Bonsai Mondego (garden centre, 2 km); addresses and opening hours are below.
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Zucchini in Coimbra: soil, season and weather
In Coimbra the soil, not frost, sets the date: the last frost is over around 29 January, but the top 7 cm of soil reaches 18 °C — the minimum on the zucchini card — only around 12 May, 103 days later. Coimbra has no autumn frost in the median year, so frost does not end the season.
| Last spring frost | 29 January |
|---|---|
| Top 7 cm of soil at 18 °C | 12 May, 103 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 | 13:30 on 21 April, 14:18 on 12 May |
| Watering outdoors when fruiting (card) | every 3 days; the driest month, August, has 1 rainy day |
The same dates in Coimbra hold for Cucumber, Bell Pepper, Eggplant, Pumpkin and Watermelon.
Zucchini in Coimbra: 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 Coimbra during the zucchini season
About 322 mm of rain falls in the season; August is the driest month (7 mm) and October the wettest (150 mm).
| Month | Day, °C | Night, °C | Rain, mm | Rainy days | Daylight on the 15th |
|---|---|---|---|---|---|
| May | 22.8 | 11.8 | 65 | 10 | 14:23 |
| June | 25.1 | 14.1 | 46 | 8 | 15:01 |
| July | 28.8 | 15.8 | 9 | 2 | 14:46 |
| August | 29.3 | 15.7 | 7 | 1 | 13:48 |
| September | 26.5 | 14.5 | 45 | 6 | 12:30 |
| October | 23 | 13.1 | 150 | 12 | 11:11 |
ERA5 2016–2025, Open-Meteo
Zucchini in nearby cities
Around Coimbra, Castelo Branco is 12 days earlier and Guarda 16 days later.
Where to buy zucchini plants and seeds near Coimbra
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 Coimbra OpenStreetMap lists 3 garden centres, 1 farm-supply shop and 12 markets (collected 27 October 2026).
- Horto Mondego — garden centre
Avenida Elísio de Moura, 3030-183 Coimbra · Mon–Fri 09:00–13:00, 14:00–18:00; Sat 09:00–13:00, 14:00–17:00 · 3 km · hortomondego.pt - Bonsai Mondego — garden centre
Rua António Gonçalves 53 Lote 17, 3040-262 Coimbra · Mon–Fri 14:00–20:00; Sat 15:00–19:00 · 2 km - Tradição Loja Agrícola — farm supply
Estrada de Coselhas 265 · Mon–Fri 09:00–13:00, 15:00–19:00; Sat 09:00–13:00 · 1 km - Mercado Municipal Dom Pedro V — market
Rua Olímpio Nicolau Fernandes, 3000-303 Coimbra · Mon–Wed 07:00–00:00; Thu–Sat 07:00–02:00 · 0 km · cm-coimbra.pt
Places: © OpenStreetMap contributors, ODbL.
- How to grow zucchini
- All frost dates and weather of Coimbra
- Shops and markets: Coimbra
- Selling a surplus in Portugal
- Moon planting calendar for November 2026
- How we calculate the dates
Questions
When to plant zucchini in Coimbra?
In Coimbra, 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 Coimbra?
Sow for seedlings from 31 March.
