When to plant zucchini in Gwangju: 17 May – 6 September

In Gwangju, zucchini: sow for seedlings from 5 April to 16 August; plant into a greenhouse from 26 April to 6 September; plant out into open ground from 17 May to 6 September.

Zucchini in Gwangju: soil, season and weather

In Gwangju 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	23 November, 190 days after the start
Days in the bed to the first harvest (card)	36
First harvest, if planted in this window	22 June – 12 October
Days left for picking	154
Daylight	13:26 on 26 April, 14:03 on 17 May
Watering outdoors when fruiting (card)	every 3 days; the driest month, November, has 5 rainy days

The same dates in Gwangju hold for Cucumber, Bell Pepper, Eggplant, Pumpkin and Watermelon.

Zucchini in Gwangju: 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 Gwangju during the zucchini season

About 1120 mm of rain falls in the season; November is the driest month (50 mm) and July the wettest (287 mm).

Month	Day, °C	Night, °C	Rain, mm	Rainy days	Daylight on the 15th
May	23.3	12.2	118	9	14:00
June	27.2	17.8	176	12	14:31
July	29.4	22.5	287	18	14:19
August	30.4	23	217	16	13:30
September	26.3	18.5	178	12	12:26
October	20.1	11.3	94	7	11:20
November	13.9	4.4	50	5	10:20

ERA5 2016–2025, Open-Meteo

Zucchini in nearby cities

Around Gwangju, Jeju City is 11 days earlier and Jeonju 2 days later.

City	Distance	Date	Difference
Jeonju	77 km	19 May – 31 August	2 days later
Daejeon	140 km	17 May – 26 August	same day
Daegu	176 km	16 May – 4 September	1 day earlier
Jeju City	187 km	6 May – 2 October	11 days earlier
Busan	202 km	15 May – 5 September	2 days earlier
Ulsan	228 km	18 May – 30 August	1 day later

Where to buy zucchini plants and seeds near Gwangju

Buy plants ready to set out from 17 May to 6 September (from 26 April to 6 September for an unheated greenhouse); seed for raising your own is sown from 5 April to 16 August. Within 15 km of Gwangju OpenStreetMap lists 1 garden centre, 14 markets and 1 farm shop (collected 28 October 2026).

Dongbu Market — market
중문로9번길 39, 61190 · 6 km
Namgwangju Sunrise Market — market
제봉로17번길 13-6, 61490 · 7 km
Hwangnyong Market — market
삼월길 5, 장성군 · 15 km
Yangdong market — market
천변좌로 243 · 5 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