When to plant eggplants in Geneva: 8 June – 28 July

In Geneva, eggplant: sow for seedlings from 19 March to 29 May; plant into a greenhouse from 18 May to 28 July; plant out into open ground from 8 June to 28 July. For plants and seeds, the places nearby include Bosson (farm supply, 12 km); addresses and opening hours are below.

Eggplant in Geneva: soil, season and weather

In Geneva the soil, not frost, sets the date: the last frost is over around 10 April, but the top 7 cm of soil reaches 18 °C — the minimum on the eggplant card — only around 8 June, 59 days later.

Last spring frost	10 April
Top 7 cm of soil at 18 °C	8 June, 59 days after the last frost
Into an unheated greenhouse	18 May – 28 July; May outside: 7.9 °C at night, 17.9 °C by day; card 21–29 °C
First autumn frost	17 November, 162 days after the start
Days in the bed to the first harvest (card)	70
First harvest, if planted in this window	17 August – 6 October
Days left for picking	92
Daylight	13:13 on 9 April, 15:40 on 8 June
Watering outdoors when fruiting (card)	every 3 days; the driest month, August, has 9 rainy days

The same dates in Geneva hold for Cucumber, Bell Pepper, Zucchini, Pumpkin and Watermelon.

Eggplant in Geneva: care after planting

Planted on 8 June: in the first weeks water every 4 days.

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

8 June — feed: balanced (NPK)
6 July — 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 Geneva during the eggplant season

No month of the season averages above the eggplant card's 21–29 °C by day; the warmest, August, averages 25.9 °C. Months that stay below 21 °C even by day on average: September (20.8 °C), October (15.8 °C) and November (9.3 °C). Nights average below 21 °C in every month of the season, from 1.9 °C to 14.9 °C.

Month	Day, °C	Night, °C	Rain, mm	Rainy days	Daylight on the 15th
June	23.5	13.1	104	13	15:45
July	25.8	14.9	88	11	15:26
August	25.9	14.7	80	9	14:12
September	20.8	11	85	10	12:36
October	15.8	6.9	113	11	10:59
November	9.3	1.9	122	14	9:28

ERA5 2016–2025, Open-Meteo

Eggplant in nearby cities

Around Geneva, Chambéry is 5 days earlier and Aosta 23 days later.

City	Distance	Date	Difference
Annecy	32 km	19 June – 25 July	11 days later
Lausanne	52 km	19 June – 31 July	11 days later
Chambéry	72 km	3 June – 31 July	5 days earlier
Sion	94 km	28 June – 29 June	20 days later
Fribourg	102 km	21 June – 17 July	13 days later
Aosta	105 km	1 July – 2 July	23 days later

Where to buy eggplant plants and seeds near Geneva

Buy plants ready to set out from 8 June to 28 July (from 18 May to 28 July for an unheated greenhouse); seed for raising your own is sown from 19 March to 29 May. Within 15 km of Geneva OpenStreetMap lists 16 garden centres, 2 farm-supply shops, 8 markets and 23 farm shops (collected 27 October 2026).

Bosson — farm supply
Route de la Bergue 123, 74380 Cranves-Sales · 12 km
Carouge Market — market
Place du Marché, 1227 Carouge GE · Wed, Sat 06:00–14:00; Mar–Oct Thu 16:00–21:00 · 2 km · carouge.ch
Les Jardins de Valérie — market
Chemin de Valérie 15, 1292 Chambésy · Fri 09:00–18:00 · 5 km · jardins-de-valerie.ch
Le Marché des Mattines — market
Tue–Fri 09:00–12:30, 13:30–18:00; Sat 09:00–17:00 · 5 km · mattines.ch

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.

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