When to plant tomatoes in Busan: 21 April – 2 August

In Busan, tomato: sow for seedlings from 7 February to 11 June; plant into a greenhouse from 31 March to 2 August; plant out into open ground from 21 April to 2 August.

Tomato in Busan: soil, season and weather

In Busan the soil, not frost, sets the date: the last frost is over around 19 March, but the top 7 cm of soil reaches 15 °C — the minimum on the tomato card — only around 21 April, 33 days later.

Last spring frost	19 March
Top 7 cm of soil at 15 °C	21 April, 33 days after the last frost
Into an unheated greenhouse	31 March – 2 August; March outside: 3.7 °C at night, 14.4 °C by day; card 16–27 °C
First autumn frost	22 November, 215 days after the start
Days in the bed to the first harvest (card)	70
First harvest, if planted in this window	30 June – 11 October
Days left for picking	145
Daylight	11:22 on 28 February, 13:16 on 21 April
Watering outdoors when fruiting (card)	every 3 days; the driest month, November, has 4 rainy days

Tomato in Busan: care after planting

Planted on 21 April: in the first weeks water every 4 days.

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

21 April — feed: balanced (NPK)
19 May — feed: nitrogen

Pests and diseases of tomato 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 Busan during the tomato season

Days average above the tomato card's 16–27 °C in July (29.6 °C) and August (30.6 °C). Months that stay below 16 °C even by day on average: November (15.4 °C). Nights average below 16 °C in April, May and October, November (5.1–13.4 °C).

Month	Day, °C	Night, °C	Rain, mm	Rainy days	Daylight on the 15th
April	19	8.7	114	8	13:03
May	23.4	13.4	127	9	14:00
June	26.8	18.3	197	11	14:31
July	29.6	23	272	17	14:19
August	30.6	23.7	226	17	13:30
September	26.3	19.4	257	14	12:26
October	21.3	12.3	99	8	11:20
November	15.4	5.1	42	4	10:20

ERA5 2016–2025, Open-Meteo

Tomato in nearby cities

Around Busan, Fukuoka is 14 days earlier and Jeonju 4 days later.

City	Distance	Date	Difference
Ulsan	47 km	22 April – 27 July	1 day later
Daegu	88 km	22 April – 1 August	1 day later
Jeonju	188 km	25 April – 28 July	4 days later
Daejeon	200 km	24 April – 23 July	3 days later
Gwangju	202 km	24 April – 3 August	3 days later
Fukuoka	215 km	7 April – 31 August	14 days earlier

Where to buy tomato plants and seeds near Busan

Buy plants ready to set out from 21 April to 2 August (from 31 March to 2 August for an unheated greenhouse); seed for raising your own is sown from 7 February to 11 June. Within 15 km of Busan OpenStreetMap lists 27 markets (collected 28 October 2026).

Millac The Market — market
10:00–00:00 · 6 km
Bujeon market — market
중앙대로783번길 23, 47251 부산광역시 · 2 km
Gukje Market — market
국제시장2길 55 · Mon–Sun 09:00–18:00 · 10 km
Gaya Computer Wholesale Marketplace — market
Mon–Sat 09:30–19:00; Sun 11:00–18:30 · 7 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