When to plant eggplants in Coimbra: from 12 May

In Coimbra, eggplant: sow for seedlings from 20 February; 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.

Eggplant 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 eggplant 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
Into an unheated greenhouse	from 21 April; April outside: 9.6 °C at night, 19.7 °C by day; card 21–29 °C
Days in the bed to the first harvest (card)	70
First harvest, if planted in this window	from 21 July
Daylight	11:48 on 13 March, 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, Zucchini, Pumpkin and Watermelon.

Eggplant in Coimbra: care after planting

Planted on 12 May: in the first weeks water every 4 days.

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

12 May — feed: balanced (NPK)
9 June — feed: nitrogen

Pests and diseases of eggplant 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 Coimbra during the eggplant season

Days average above the eggplant card's 21–29 °C in August (29.3 °C). Nights average below 21 °C in every month of the season, from 11.8 °C to 15.8 °C.

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

Eggplant in nearby cities

Around Coimbra, Castelo Branco is 12 days earlier and Guarda 16 days later.

City	Distance	Date	Difference
Leiria	61 km	from 12 May	same day
Viseu	67 km	27 May – 20 August	15 days later
Castelo Branco	91 km	30 April – 5 September	12 days earlier
Guarda	105 km	28 May – 5 August	16 days later
Porto	106 km	22 May – 29 August	10 days later
Santarém	111 km	from 6 May	6 days earlier

Where to buy eggplant 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 20 February. Within 15 km of Coimbra OpenStreetMap lists 3 garden centres, 1 farm-supply shop and 12 markets (collected 27 October 2026).

Feira — market
12 km
Mercado da Pampilhosa — market
14 km
Mercado de abastecimento — market
15 km
Feira/ Parque de apoio ao visitante — market
15 km

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