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When to plant peas in Jeju City: 28 January – 6 October

In Jeju City, peas: sow straight into the bed from 28 January to 6 October.

Peas in Jeju City: soil, season and weather

Peas tolerates light frost, so it goes in three weeks before the last frost (18 February); the top 7 cm of soil averages its minimum of 4 °C already in the first week of January.

Last spring frost18 February
Top 7 cm of soil at 4 °Calready in the first week of January
First autumn frost19 December, 325 days after the start
Days in the bed to the first harvest (card)74
First harvest, if planted in this window12 April – 19 December
Days left for picking251
Daylight10:28 on 28 January
Watering outdoors when fruiting (card)every 3 days; the driest month, December, has 14 rainy days

Peas in Jeju City: care after planting

Planted on 28 January: in the first weeks water every 6 days.

Pests and diseases of peas to watch for:

Weather in Jeju City during the peas season

About 2020 mm of rain falls in the season; December is the driest month (85 mm) and September the wettest (354 mm).

MonthDay, °CNight, °CRain, mmRainy daysDaylight on the 15th
January7.63.21071310:10
February8.73.6901210:59
March13.37.31311111:56
April17.611.41341013:00
May21.815.71481113:53
June2519.92081414:22
July2924.62331814:10
August29.925.42401913:25
September26.1223541912:25
October20.816.41821311:23
November15.710.41081110:27
December9.95.285149:57

ERA5 2016–2025, Open-Meteo

Peas in nearby cities

All the nearest cities on our list plant peas later than Jeju City; the closest date is in Busan, 29 days later.

CityDistanceDateDifference
Gwangju187 km11 March – 10 September42 days later
Jeonju263 km6 March – 4 September37 days later
Busan299 km26 February – 9 September29 days later
Daegu324 km26 February – 8 September29 days later
Daejeon326 km11 March – 30 August42 days later
Ulsan342 km1 March – 3 September32 days later

Where to buy peas seeds in Jeju City

Seeds go straight into the bed from 28 January to 6 October; buy them before that. Within 15 km of Jeju City OpenStreetMap lists 1 garden centre, 7 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 peas in Jeju City?

In Jeju City, peas: sow straight into the bed from 28 January to 6 October.

When is the last spring frost in Jeju City?

Last spring frost around 18 February, first autumn frost around 19 December.

Other crops in Jeju City, with their dates