When to plant pumpkins in Sendai: 7 June – 29 July

In Sendai, pumpkin: sow for seedlings from 5 April to 17 June; plant into a greenhouse from 17 May to 29 July; plant out into open ground from 7 June to 29 July. For plants and seeds, the places nearby include marché lien (farm shop, 12 km); addresses and opening hours are below.

Pumpkin in Sendai: soil, season and weather

In Sendai the soil, not frost, sets the date: the last frost is over around 31 March, but the top 7 cm of soil reaches 18 °C — the minimum on the pumpkin card — only around 7 June, 68 days later.

Last spring frost	31 March
Top 7 cm of soil at 18 °C	7 June, 68 days after the last frost
First autumn frost	23 November, 169 days after the start
Days in the bed to the first harvest (card)	75
First harvest, if planted in this window	21 August – 12 October
Days left for picking	94
Daylight	13:36 on 26 April, 14:44 on 7 June
Watering outdoors when fruiting (card)	every 5 days; the driest month, November, has 9 rainy days

The same dates in Sendai hold for Cucumber, Bell Pepper, Eggplant, Zucchini and Watermelon.

Pumpkin in Sendai: care after planting

Planted on 7 June: in the first weeks water every 4 days.

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

28 June — feed: nitrogen

Pests and diseases of pumpkin 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 Sendai during the pumpkin season

About 1031 mm of rain falls in the season; November is the driest month (61 mm) and August the wettest (241 mm).

Month	Day, °C	Night, °C	Rain, mm	Rainy days	Daylight on the 15th
June	23.1	15.6	151	15	14:49
July	26.7	20.1	214	20	14:35
August	27.9	21.2	241	20	13:41
September	24	17.5	201	18	12:28
October	18.1	10.9	163	12	11:15
November	12.6	5	61	9	10:07

ERA5 2016–2025, Open-Meteo

Pumpkin in nearby cities

Around Sendai, Tokyo is 40 days earlier and Sapporo 40 days later.

City	Distance	Date	Difference
Niigata	165 km	20 May – 25 August	18 days earlier
Tokyo	305 km	28 April – 19 August	40 days earlier
Hamamatsu	485 km	2 May – 23 August	36 days earlier
Nagoya	493 km	6 May – 15 August	32 days earlier
Sapporo	534 km	17 July – 3 August	40 days later
Kyoto	582 km	14 May – 12 August	24 days earlier

Where to buy pumpkin plants and seeds near Sendai

Buy plants ready to set out from 7 June to 29 July (from 17 May to 29 July for an unheated greenhouse); seed for raising your own is sown from 5 April to 17 June. Within 15 km of Sendai OpenStreetMap lists 2 garden centres, 1 farm-supply shop, 4 markets and 2 farm shops (collected 28 October 2026).

marché lien — farm shop
Mon–Sat 10:00–18:00; Sun, public holidays 09:00–18:00 · 12 km
ガーデン・ガーデン — garden centre
9 km
キノックス — farm supply
7 km
Chuo Wholesale Market Meat Market — market
8 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