When to plant pumpkins in Spokane: 22 May – 20 June

In Spokane, pumpkin: sow for seedlings from 20 March to 9 May; plant into a greenhouse from 1 May to 20 June; plant out into open ground from 22 May to 20 June.

Pumpkin in Spokane: soil, season and weather

In Spokane the soil, not frost, sets the date: the last frost is over around 21 April, but the top 7 cm of soil reaches 18 °C — the minimum on the pumpkin card — only around 22 May, 31 days later.

Last spring frost	21 April
Top 7 cm of soil at 18 °C	22 May, 31 days after the last frost
First autumn frost	15 October, 146 days after the start
Days in the bed to the first harvest (card)	75
First harvest, if planted in this window	5 August – 3 September
Days left for picking	71
Daylight	13:20 on 10 April, 15:24 on 22 May
Watering outdoors when fruiting (card)	every 5 days; the driest month, July, has 2 rainy days

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

Pumpkin in Spokane: care after planting

Planted on 22 May: in the first weeks water every 4 days.

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

12 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 Spokane during the pumpkin season

About 176 mm of rain falls in the season; July is the driest month (6 mm) and October the wettest (56 mm).

Month	Day, °C	Night, °C	Rain, mm	Rainy days	Daylight on the 15th
May	21.2	7.8	50	9	15:07
June	25.5	11.7	30	6	15:58
July	31.3	15.9	6	2	15:38
August	30.9	15.5	14	3	14:19
September	24.8	10.8	20	4	12:38
October	15.3	3.8	56	9	10:55

ERA5 2016–2025, Open-Meteo

Pumpkin in nearby cities

All the nearest cities on our list plant pumpkin later than Spokane; the closest date is in Kelowna, 11 days later.

City	Distance	Date	Difference
Missoula	271 km	30 June – 23 July	39 days later
Kelowna	289 km	2 June – 6 July	11 days later
Seattle	367 km	21 June – 30 July	30 days later
Olympia	418 km	26 June – 21 July	35 days later
Helena	425 km	3 July – 20 July	42 days later
Calgary	449 km	18 June – 18 July	27 days later

Where to buy pumpkin plants and seeds near Spokane

Buy plants ready to set out from 22 May to 20 June (from 1 May to 20 June for an unheated greenhouse); seed for raising your own is sown from 20 March to 9 May. Within 15 km of Spokane OpenStreetMap lists 13 garden centres, 6 farm-supply shops, 4 plant nurseries and 1 market (collected 20 October 2026).

Gibson's Nursery and Landscape Supply — plant nursery
15 km
Spray Center Electronics — farm supply
9 km
D & S Small Engines — farm supply
10 km
Ritchie Bros. Auctioneers — farm supply
10 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