When to plant cucumbers in Kyoto: 14 May – 22 September

In Kyoto, cucumber: sow for seedlings from 26 March to 25 August; plant into a greenhouse from 23 April to 22 September; plant out into open ground from 14 May to 22 September. For plants and seeds, the places nearby include 前田尚吾さんの直売所 (farm shop, 10 km) and 岩崎農園 (farm shop, 14 km); addresses and opening hours are below.

Cucumber in Kyoto: soil, season and weather

In Kyoto the soil, not frost, sets the date: the last frost is over around 22 March, but the top 7 cm of soil reaches 18 °C — the minimum on the cucumber card — only around 14 May, 53 days later.

Last spring frost	22 March
Top 7 cm of soil at 18 °C	14 May, 53 days after the last frost
Into an unheated greenhouse	23 April – 22 September; April outside: 8.7 °C at night, 18.8 °C by day; card 18–25 °C
First autumn frost	7 December, 207 days after the start
Days in the bed to the first harvest (card)	34
First harvest, if planted in this window	17 June – 26 October
Days left for picking	173
Daylight	13:05 on 16 April, 13:58 on 14 May
Watering outdoors when fruiting (card)	every 2 days; the driest month, December, has 7 rainy days

The same dates in Kyoto hold for Bell Pepper, Eggplant, Zucchini, Pumpkin and Watermelon.

Cucumber in Kyoto: care after planting

Planted on 14 May: in the first weeks water every 4 days.

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

21 May — feed: nitrogen

Pests and diseases of cucumber 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 Kyoto during the cucumber season

No month of the season averages above the cucumber card's 18–35 °C by day; the warmest, August, averages 32.4 °C. Months that stay below 18 °C even by day on average: November (16.3 °C) and December (10.6 °C). Nights average below 18 °C in May and October–December (1.5–13.6 °C).

Month	Day, °C	Night, °C	Rain, mm	Rainy days	Daylight on the 15th
May	23.3	13.4	183	11	13:59
June	26.8	18.1	254	14	14:30
July	30.8	22.9	248	16	14:18
August	32.4	24	183	13	13:30
September	28.4	20.6	192	15	12:26
October	22	13.6	190	12	11:21
November	16.3	7.1	71	7	10:21
December	10.6	1.5	57	7	9:49

ERA5 2016–2025, Open-Meteo

Cucumber in nearby cities

Around Kyoto, Tokyo is 16 days earlier and Hiroshima 12 days later.

City	Distance	Date	Difference
Osaka	43 km	5 May – 2 October	9 days earlier
Nagoya	105 km	6 May – 25 September	8 days earlier
Okayama	174 km	14 May – 30 September	same day
Hamamatsu	182 km	2 May – 3 October	12 days earlier
Hiroshima	311 km	26 May – 10 September	12 days later
Tokyo	363 km	28 April – 29 September	16 days earlier

Where to buy cucumber plants and seeds near Kyoto

Buy plants ready to set out from 14 May to 22 September (from 23 April to 22 September for an unheated greenhouse); seed for raising your own is sown from 26 March to 25 August. Within 15 km of Kyoto OpenStreetMap lists 16 garden centres, 1 farm-supply shop, 1 plant nursery, 6 markets and 19 farm shops (collected 28 October 2026).

前田尚吾さんの直売所 — farm shop
08:30–18:30 · 10 km · city.kyoto.lg.jp
岩崎農園 — farm shop
Mar–Apr · 14 km
Kawanami Plantation — garden centre
11 km
KOHNAN — garden centre
6 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.

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