When to plant eggplants in Mons: 10 June – 30 July

In Mons, eggplant: sow for seedlings from 21 March to 31 May; plant into a greenhouse from 20 May to 30 July; plant out into open ground from 10 June to 30 July.

Eggplant in Mons: soil, season and weather

In Mons 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 10 June, 61 days later.

Last spring frost	10 April
Top 7 cm of soil at 18 °C	10 June, 61 days after the last frost
Into an unheated greenhouse	20 May – 30 July; May outside: 8.5 °C at night, 18.4 °C by day; card 21–29 °C
First autumn frost	19 November, 162 days after the start
Days in the bed to the first harvest (card)	70
First harvest, if planted in this window	19 August – 8 October
Days left for picking	92
Daylight	13:31 on 11 April, 16:21 on 10 June
Watering outdoors when fruiting (card)	every 3 days; the driest month, August, has 12 rainy days

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

Eggplant in Mons: care after planting

Planted on 10 June: in the first weeks water every 4 days.

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

10 June — feed: balanced (NPK)
8 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 Mons during the eggplant season

No month of the season averages above the eggplant card's 21–29 °C by day; the warmest, August, averages 23.5 °C. Months that stay below 21 °C even by day on average: September (20.3 °C), October (15.7 °C) and November (10.1 °C). Nights average below 21 °C in every month of the season, from 4.7 °C to 14.2 °C.

Month	Day, °C	Night, °C	Rain, mm	Rainy days	Daylight on the 15th
June	22.1	12.7	79	11	16:25
July	23.2	13.8	67	11	16:02
August	23.5	14.2	61	12	14:34
September	20.3	11.8	66	11	12:41
October	15.7	9.2	75	13	10:48
November	10.1	4.7	69	13	9:02

ERA5 2016–2025, Open-Meteo

Eggplant in nearby cities

Around Mons, Ghent is 10 days earlier and Namur 1 day later.

City	Distance	Date	Difference
Charleroi	35 km	10 June – 26 July	same day
Brussels	53 km	8 June – 2 August	2 days earlier
Namur	65 km	11 June – 26 July	1 day later
Lille	66 km	11 June – 1 August	1 day later
Ghent	69 km	31 May – 4 August	10 days earlier
Leuven	71 km	31 May – 2 August	10 days earlier

Where to buy eggplant plants and seeds near Mons

Buy plants ready to set out from 10 June to 30 July (from 20 May to 30 July for an unheated greenhouse); seed for raising your own is sown from 21 March to 31 May. Within 15 km of Mons OpenStreetMap lists 21 garden centres, 1 farm-supply shop, 2 plant nurseries, 8 markets and 15 farm shops (collected 27 October 2026).

Les Halles du Manège — market
Rue des Droits de l'Homme 2 · Mon 10:00–18:30; Wed–Sat 10:00–18:30; Sun 10:00–13:00 · 1 km · leshallescooperatives.be
La Ruche Qui Dit Oui — market
Sat 10:00–11:30 · 2 km · laruchequiditoui.be
La Romana & Fils — market
Rue de Douvrain 24A, 7011 Ghlin · 5 km
Marché aux Poissons — market
Fri 08:00–13:00 · 0 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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