When to plant cucumbers in Valence: 29 May – 6 September

In Valence, cucumber: sow for seedlings from 10 April to 9 August; plant into a greenhouse from 8 May to 6 September; plant out into open ground from 29 May to 6 September. For plants and seeds, the places nearby include Gamm Vert (garden centre, 4 km) and Pépinières Jacquet (garden centre, 4 km); addresses and opening hours are below.

Cucumber in Valence: soil, season and weather

In Valence the soil, not frost, sets the date: the last frost is over around 18 March, but the top 7 cm of soil reaches 18 °C — the minimum on the cucumber card — only around 29 May, 72 days later.

Last spring frost	18 March
Top 7 cm of soil at 18 °C	29 May, 72 days after the last frost
Into an unheated greenhouse	8 May – 6 September; May outside: 10.6 °C at night, 20.9 °C by day; card 18–25 °C
First autumn frost	21 November, 176 days after the start
Days in the bed to the first harvest (card)	34
First harvest, if planted in this window	2 July – 10 October
Days left for picking	142
Daylight	14:14 on 1 May, 15:17 on 29 May
Watering outdoors when fruiting (card)	every 2 days; the driest month, August, has 6 rainy days

The same dates in Valence hold for Bell Pepper, Eggplant, Zucchini, Pumpkin and Watermelon.

Cucumber in Valence: care after planting

Planted on 29 May: in the first weeks water every 4 days.

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

5 June — feed: nitrogen

Pests and diseases of cucumber 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 Valence during the cucumber season

No month of the season averages above the cucumber card's 18–35 °C by day; the warmest, August, averages 29.4 °C. Months that stay below 18 °C even by day on average: November (12.1 °C). Nights average below 18 °C in every month of the season, from 4.9 °C to 17.5 °C.

Month	Day, °C	Night, °C	Rain, mm	Rainy days	Daylight on the 15th
May	20.9	10.6	97	13	14:49
June	26.8	15.8	70	10	15:35
July	29.3	17.5	52	6	15:17
August	29.4	17.4	45	6	14:07
September	24.3	13.6	68	8	12:35
October	19	9.8	111	10	11:02
November	12.1	4.9	99	12	9:35

ERA5 2016–2025, Open-Meteo

Cucumber in nearby cities

Around Valence, Nîmes is 12 days earlier and Grenoble 30 days later.

City	Distance	Date	Difference
Saint-Étienne	70 km	14 June – 2 September	16 days later
Grenoble	70 km	28 June – 10 August	30 days later
Lyon	92 km	27 May – 10 September	2 days earlier
Chambéry	106 km	3 June – 5 September	5 days later
Avignon	109 km	18 May – 17 September	11 days earlier
Nîmes	129 km	17 May – 16 September	12 days earlier

Where to buy cucumber plants and seeds near Valence

Buy plants ready to set out from 29 May to 6 September (from 8 May to 6 September for an unheated greenhouse); seed for raising your own is sown from 10 April to 9 August. Within 15 km of Valence OpenStreetMap lists 17 garden centres, 3 plant nurseries, 8 markets and 21 farm shops (collected 27 October 2026).

Gamm Vert — garden centre
Mon–Sat 09:00–12:30, 14:00–19:00; Sun 09:30–12:00 · 4 km
Pépinières Jacquet — garden centre
Tue–Fri 09:00–12:00, Tue–Fri 14:00–18:00, Sat 08:00–12:00 · 4 km
Gamm Vert — garden centre
Mon–Sat 08:00–12:15; Sun, public holidays closed, Mon–Sat 14:00–18:30 · 10 km
Gamm Vert — garden centre
Mon–Sat 09:00–12:00, 14:00–18:30 · 11 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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