When to plant eggplants in Saint-Étienne: 14 June – 28 July

In Saint-Étienne, eggplant: sow for seedlings from 25 March to 29 May; plant into a greenhouse from 24 May to 28 July; plant out into open ground from 14 June to 28 July.

Eggplant in Saint-Étienne: soil, season and weather

In Saint-Étienne the soil, not frost, sets the date: the last frost is over around 13 April, but the top 7 cm of soil reaches 18 °C — the minimum on the eggplant card — only around 14 June, 62 days later.

Last spring frost	13 April
Top 7 cm of soil at 18 °C	14 June, 62 days after the last frost
Into an unheated greenhouse	24 May – 28 July; May outside: 8 °C at night, 17.7 °C by day; card 21–29 °C
First autumn frost	17 November, 156 days after the start
Days in the bed to the first harvest (card)	70
First harvest, if planted in this window	23 August – 6 October
Days left for picking	86
Daylight	13:29 on 15 April, 15:39 on 14 June
Watering outdoors when fruiting (card)	every 3 days; the driest month, August, has 8 rainy days

The same dates in Saint-Étienne hold for Cucumber, Bell Pepper, Zucchini, Pumpkin and Watermelon.

Eggplant in Saint-Étienne: care after planting

Planted on 14 June: in the first weeks water every 4 days.

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

14 June — feed: balanced (NPK)
12 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 Saint-Étienne during the eggplant season

No month of the season averages above the eggplant card's 21–29 °C by day; the warmest, August, averages 25.7 °C. Months that stay below 21 °C even by day on average: October (16.3 °C) and November (9.9 °C). Nights average below 21 °C in every month of the season, from 2.9 °C to 14.5 °C.

Month	Day, °C	Night, °C	Rain, mm	Rainy days	Daylight on the 15th
June	23.3	12.9	99	14	15:39
July	25.5	14.5	68	9	15:21
August	25.7	14.5	64	8	14:09
September	21	11.1	71	10	12:35
October	16.3	7.7	105	11	11:01
November	9.9	2.9	83	12	9:32

ERA5 2016–2025, Open-Meteo

Eggplant in nearby cities

Around Saint-Étienne, Lyon is 18 days earlier and Grenoble 14 days later.

City	Distance	Date	Difference
Lyon	50 km	27 May – 5 August	18 days earlier
Valence	70 km	29 May – 1 August	16 days earlier
Grenoble	108 km	28 June – 5 July	14 days later
Clermont-Ferrand	109 km	27 June – 23 July	13 days later
Chambéry	120 km	3 June – 31 July	11 days earlier
Annecy	145 km	19 June – 25 July	5 days later

Where to buy eggplant plants and seeds near Saint-Étienne

Buy plants ready to set out from 14 June to 28 July (from 24 May to 28 July for an unheated greenhouse); seed for raising your own is sown from 25 March to 29 May. Within 15 km of Saint-Étienne OpenStreetMap lists 12 garden centres, 5 farm-supply shops, 1 plant nursery, 21 markets and 13 farm shops (collected 20 October 2026).

Marché de Carnot — market
Tue 06:00–13:00; Fri 06:00–13:00; Sun 06:00–13:00 · 1 km
Marché de Massenet — market
Wed 06:00–13:00 · 0 km
Marché de producteurs Albert Thomas — market
Tue 06:00–13:00; Thu 06:00–13:00; Sat 06:00–13:00 · 1 km
Marché Bio Albert Thomas — market
Fri 07:00–12:00 · 1 km

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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