When to plant eggplants in Constantine: 7 May – 23 August

In Constantine, eggplant: sow for seedlings from 15 February to 24 June; plant into a greenhouse from 16 April to 23 August; plant out into open ground from 7 May to 23 August.

Eggplant in Constantine: soil, season and weather

In Constantine the soil, not frost, sets the date: the last frost is over around 20 February, but the top 7 cm of soil reaches 18 °C — the minimum on the eggplant card — only around 7 May, 76 days later.

Last spring frost	20 February
Top 7 cm of soil at 18 °C	7 May, 76 days after the last frost
Into an unheated greenhouse	16 April – 23 August; April outside: 7.5 °C at night, 20.5 °C by day; card 21–29 °C
First autumn frost	13 December, 220 days after the start
Days in the bed to the first harvest (card)	70
First harvest, if planted in this window	16 July – 1 November
Days left for picking	150
Daylight	11:39 on 8 March, 13:51 on 7 May
Watering outdoors when fruiting (card)	every 3 days; the driest month, July, has 1 rainy day

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

Eggplant in Constantine: care after planting

Planted on 7 May: in the first weeks water every 4 days.

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

7 May — feed: balanced (NPK)
4 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 Constantine during the eggplant season

Days average above the eggplant card's 21–29 °C in June–September (29.6–36 °C). Months that stay below 21 °C even by day on average: November (18 °C) and December (14.1 °C). Nights average below 21 °C in every month of the season, from 3.8 °C to 19.3 °C.

Month	Day, °C	Night, °C	Rain, mm	Rainy days	Daylight on the 15th
May	24.7	11	59	9	14:05
June	32	16.2	17	3	14:38
July	36	19.3	2	1	14:25
August	34.3	18.7	10	3	13:34
September	29.6	16	27	6	12:27
October	24.3	11.4	36	7	11:18
November	18	6.8	52	9	10:15
December	14.1	3.8	43	8	9:42

ERA5 2016–2025, Open-Meteo

Eggplant in nearby cities

Around Constantine, Elche is 28 days earlier and Ajaccio 22 days later.

City	Distance	Date	Difference
Palermo	628 km	28 May – 2 September	21 days later
Ajaccio	644 km	29 May – 19 August	22 days later
Gandia	664 km	from 5 May	2 days earlier
Barcelona	677 km	24 May – 22 August	17 days later
Elche	680 km	from 9 April	28 days earlier
Valencia	703 km	from 22 April	15 days earlier

Where to buy eggplant plants and seeds near Constantine

Buy plants ready to set out from 7 May to 23 August (from 16 April to 23 August for an unheated greenhouse); seed for raising your own is sown from 15 February to 24 June. Within 15 km of Constantine OpenStreetMap lists 14 markets (collected 27 October 2026).

سوق الخروب — market
14 km
Marché Couvert du cité 1600 logts — market
15 km
Marché n°1 — market
Cité 20 août 1955, constantine · 4 km
Marché n°2 — market
Cité 20 août 1955, constantine · 4 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.

Questions