Greenly Garden

When to plant pumpkins in Ipswich: 14 June – 4 August

In Ipswich, pumpkin: sow for seedlings from 12 April to 23 June; plant into a greenhouse from 24 May to 4 August; plant out into open ground from 14 June to 4 August.

Pumpkin in Ipswich: soil, season and weather

In Ipswich the soil, not frost, sets the date: the last frost is over around 15 March, but the top 7 cm of soil reaches 18 °C — the minimum on the pumpkin card — only around 14 June, 91 days later.

Last spring frost15 March
Top 7 cm of soil at 18 °C14 June, 91 days after the last frost
First autumn frost29 November, 168 days after the start
Days in the bed to the first harvest (card)75
First harvest, if planted in this window28 August – 18 October
Days left for picking93
Daylight15:00 on 3 May, 16:42 on 14 June
Watering outdoors when fruiting (card)every 5 days; the driest month, September, has 10 rainy days

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

Pumpkin in Ipswich: care after planting

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

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

  • 5 July — 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 Ipswich during the pumpkin season

About 363 mm of rain falls in the season; September is the driest month (49 mm) and October the wettest (76 mm).

MonthDay, °CNight, °CRain, mmRainy daysDaylight on the 15th
June19.412.6601016:43
July21.414.4611216:18
August21.614.6541014:43
September19.112.6491012:43
October15.39.8761210:44
November10.9663108:50

ERA5 2016–2025, Open-Meteo

Pumpkin in nearby cities

Around Ipswich, London is 2 days earlier and Brighton 36 days later.

CityDistanceDateDifference
Norwich64 km27 June – 3 August13 days later
Cambridge73 km17 June – 30 July3 days later
London108 km12 June – 29 July2 days earlier
Brighton164 km20 July – 6 August36 days later
Leicester168 km21 June – 25 July7 days later
Oxford170 km23 June – 29 July9 days later

Where to buy pumpkin plants and seeds near Ipswich

Buy plants ready to set out from 14 June to 4 August (from 24 May to 4 August for an unheated greenhouse); seed for raising your own is sown from 12 April to 23 June. Within 15 km of Ipswich OpenStreetMap lists 8 garden centres, 1 market and 3 farm shops (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 pumpkins in Ipswich?

In Ipswich, pumpkin: sow for seedlings from 12 April to 23 June; plant into a greenhouse from 24 May to 4 August; plant out into open ground from 14 June to 4 August.

When to sow pumpkins for seedlings in Ipswich?

Sow for seedlings from 12 April to 23 June.

When is the last spring frost in Ipswich?

Last spring frost around 15 March, first autumn frost around 29 November.

Other crops in Ipswich, with their dates