When to plant eggplants in Southampton: 17 June – 3 August

In Southampton, eggplant: sow for seedlings from 28 March to 4 June; plant into a greenhouse from 27 May to 3 August; plant out into open ground from 17 June to 3 August. For plants and seeds, the places nearby include Hampshire Carnivorous Plants (plant nursery, 12 km) and Park Place Farm Nursery (garden centre, 14 km); addresses and opening hours are below.

Eggplant in Southampton: soil, season and weather

In Southampton the soil, not frost, sets the date: the last frost is over around 4 April, but the top 7 cm of soil reaches 18 °C — the minimum on the eggplant card — only around 17 June, 74 days later.

Last spring frost	4 April
Top 7 cm of soil at 18 °C	17 June, 74 days after the last frost
Into an unheated greenhouse	27 May – 3 August; May outside: 8.2 °C at night, 17.4 °C by day; card 21–29 °C
First autumn frost	23 November, 159 days after the start
Days in the bed to the first harvest (card)	70
First harvest, if planted in this window	26 August – 12 October
Days left for picking	89
Daylight	13:59 on 18 April, 16:31 on 17 June
Watering outdoors when fruiting (card)	every 3 days; the driest month, July, has 10 rainy days

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

Eggplant in Southampton: care after planting

Planted on 17 June: in the first weeks water every 4 days.

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

17 June — feed: balanced (NPK)
15 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 Southampton during the eggplant season

No month of the season averages above the eggplant card's 21–29 °C by day; the warmest, July, averages 22.3 °C. Months that stay below 21 °C even by day on average: June and September–November (11.1–20.5 °C). Nights average below 21 °C in every month of the season, from 5.2 °C to 13.5 °C.

Month	Day, °C	Night, °C	Rain, mm	Rainy days	Daylight on the 15th
June	20.5	11.5	59	11	16:30
July	22.3	13.5	54	10	16:06
August	21.8	13.3	60	10	14:36
September	19.2	11.2	73	11	12:42
October	15.4	8.8	100	13	10:47
November	11.1	5.2	86	13	8:58

ERA5 2016–2025, Open-Meteo

Eggplant in nearby cities

Around Southampton, London is 5 days earlier and Brighton 33 days later.

City	Distance	Date	Difference
Portsmouth	24 km	16 June – 11 August	1 day earlier
Brighton	89 km	20 July – 11 August	33 days later
Oxford	95 km	23 June – 3 August	6 days later
Bristol	103 km	19 June – 2 August	2 days later
London	111 km	12 June – 3 August	5 days earlier
Cardiff	140 km	24 June – 2 August	7 days later

Where to buy eggplant plants and seeds near Southampton

Buy plants ready to set out from 17 June to 3 August (from 27 May to 3 August for an unheated greenhouse); seed for raising your own is sown from 28 March to 4 June. Within 15 km of Southampton OpenStreetMap lists 28 garden centres, 15 plant nurseries, 1 market and 10 farm shops (collected 20 October 2026).

Park Place Farm Nursery — garden centre
Titchfield Lane, PO17 5HB Fareham · 14 km
Redhill Nursery — garden centre
Mon–Fri 08:00–12:30, 13:30–17:00; Sat–Sun 09:00–12:00 · 14 km
Choice Plants — garden centre
Stockbridge Road, SO51 0NB Romsey · 15 km
Hampshire Carnivorous Plants — plant nursery
Stroudwood Lane, SO32 1HG Southampton · 12 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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