When to plant zucchini in Daejeon: 17 May – 26 August

In Daejeon, zucchini: sow for seedlings from 5 April to 5 August; plant into a greenhouse from 26 April to 26 August; plant out into open ground from 17 May to 26 August.

Zucchini 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 zucchini card — only around 17 May, 46 days later.

Last spring frost	1 April
Top 7 cm of soil at 18 °C	17 May, 46 days after the last frost
First autumn frost	12 November, 179 days after the start
Days in the bed to the first harvest (card)	36
First harvest, if planted in this window	22 June – 1 October
Days left for picking	143
Daylight	13:30 on 26 April, 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, Eggplant, Pumpkin and Watermelon.

Zucchini in Daejeon: care after planting

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

Pests and diseases of zucchini to watch for:

Weather in Daejeon during the zucchini season

About 1009 mm of rain falls in the season; November is the driest month (45 mm) and July the wettest (265 mm).

Month	Day, °C	Night, °C	Rain, mm	Rainy days	Daylight on the 15th
May	23.2	11.8	89	9	14:05
June	27.4	17.1	145	11	14:37
July	29.2	21.6	265	17	14:25
August	30	22	219	18	13:34
September	25.2	17.2	168	11	12:27
October	18.7	9.8	78	8	11:18
November	12.1	2.4	45	5	10:15

ERA5 2016–2025, Open-Meteo

Zucchini in nearby cities

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

City	Distance	Date	Difference
Jeonju	63 km	19 May – 31 August	2 days later
Daegu	121 km	16 May – 4 September	1 day earlier
Seoul	139 km	15 May – 20 August	2 days earlier
Gwangju	140 km	17 May – 6 September	same day
Chuncheon	172 km	24 May – 14 August	7 days later
Ulsan	195 km	18 May – 30 August	1 day later

Where to buy zucchini plants and seeds near Daejeon

Buy plants ready to set out from 17 May to 26 August (from 26 April to 26 August for an unheated greenhouse); seed for raising your own is sown from 5 April to 5 August. Within 15 km of Daejeon OpenStreetMap lists 24 markets and 1 farm shop (collected 28 October 2026).

축산물도매시장 — market
한밭대로1003번길 161-67, 34377 대전광역시 · 2 km
Sin Jungang Market — market
5 km
Songgang Market — market
10 km
Dasomuiwon — market
1 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