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When to plant eggplants in Daejeon: 17 May – 23 July

In Daejeon, eggplant: sow for seedlings from 25 February to 24 May; plant into a greenhouse from 26 April to 23 July; plant out into open ground from 17 May to 23 July.

Eggplant in Daejeon: soil, season and weather

In Daejeon the soil, not frost, sets the date: the last frost is over around 1 April, but the top 7 cm of soil reaches 18 °C — the minimum on the eggplant card — only around 17 May, 46 days later.

Last spring frost1 April
Top 7 cm of soil at 18 °C17 May, 46 days after the last frost
Into an unheated greenhouse26 April – 23 July; April outside: 6.8 °C at night, 18.5 °C by day; card 21–29 °C
First autumn frost12 November, 179 days after the start
Days in the bed to the first harvest (card)70
First harvest, if planted in this window26 July – 1 October
Days left for picking109
Daylight12:02 on 18 March, 14:08 on 17 May
Watering outdoors when fruiting (card)every 3 days; the driest month, November, has 5 rainy days

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

Eggplant in Daejeon: care after planting

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

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

  • 17 May — feed: balanced (NPK)
  • 14 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 Daejeon during the eggplant season

Days average above the eggplant card's 21–29 °C in July (29.2 °C) and August (30 °C). Months that stay below 21 °C even by day on average: October (18.7 °C) and November (12.1 °C). Nights average below 21 °C in May, June and September–November (2.4–17.2 °C).

MonthDay, °CNight, °CRain, mmRainy daysDaylight on the 15th
May23.211.889914:05
June27.417.11451114:37
July29.221.62651714:25
August30222191813:34
September25.217.21681112:27
October18.79.878811:18
November12.12.445510:15

ERA5 2016–2025, Open-Meteo

Eggplant in nearby cities

Around Daejeon, Seoul is 2 days earlier and Chuncheon 7 days later.

CityDistanceDateDifference
Jeonju63 km19 May – 28 July2 days later
Daegu121 km16 May – 1 August1 day earlier
Seoul139 km15 May – 17 July2 days earlier
Gwangju140 km17 May – 3 Augustsame day
Chuncheon172 km24 May – 11 July7 days later
Ulsan195 km18 May – 27 July1 day later

Where to buy eggplant plants and seeds near Daejeon

Buy plants ready to set out from 17 May to 23 July (from 26 April to 23 July for an unheated greenhouse); seed for raising your own is sown from 25 February to 24 May. Within 15 km of Daejeon OpenStreetMap lists 24 markets and 1 farm shop (collected 28 October 2026).

Places: © OpenStreetMap contributors, ODbL.

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

When to plant eggplants in Daejeon?

In Daejeon, eggplant: sow for seedlings from 25 February to 24 May; plant into a greenhouse from 26 April to 23 July; plant out into open ground from 17 May to 23 July.

When to sow eggplants for seedlings in Daejeon?

Sow for seedlings from 25 February to 24 May.

When is the last spring frost in Daejeon?

Last spring frost around 1 April, first autumn frost around 12 November.

Other crops in Daejeon, with their dates