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When to plant in Spokane

Spokane, Washington. A sowing, planting and harvest calendar for 25 vegetables and herbs, worked out from Spokane’s own frost dates and temperatures.

Last spring frostApr 26
First autumn frostOct 15
Frost-free season171 days
Hardiness zone7a

Photo: Acabashi, CC BY-SA 4.0, via Wikimedia Commons

In the garden now (2 November 2026)

Sow or plant outside

Nothing goes in outdoors this week.

Start indoors

No indoor sowing due this week.

Coming up in the next 4 weeks

No new outdoor sowings start in the next four weeks.

Spokane planting calendar

Bars show when each crop can go in and when a planting from that window is ready. The blue band is the frost season, from the average first autumn frost to the average last spring frost. Hover or tap a crop for details.

Sow indoorsSow or plant outdoorsHarvestFrost seasonToday

Swipe sideways to see the whole year →

Dates by crop

CropSow indoorsSow / plant outdoorsHarvest
Tomato Apr 8 – May 13 Jun 3 – Jul 16 plant out Aug 7 – Oct 1
Pepper Apr 8 – May 13 Jun 17 – Jul 12 plant out Aug 19 – Oct 1
Eggplant (aubergine) Apr 15 – May 13 Jun 24 – Jul 8 plant out Aug 30 – Oct 1
Cucumber May 13 – Jun 9 Jun 10 – Jul 28 sow Jul 30 – Oct 1
Zucchini (courgette) May 6 – Jun 2 Jun 3 – Jul 31 sow Jul 23 – Oct 1
Pumpkin and winter squash May 6 – Jun 1 Jun 3 – Jun 22 sow Sep 2 – Oct 14
Watermelon May 27 – Jun 13 Jun 24 – Jul 4 sow Sep 4 – Oct 1
Sweet corn – May 19 – Jul 10 sow Aug 9 – Oct 1
Green beans – Jun 3 – Jul 28 sow Jul 27 – Oct 1
Peas – Apr 1 – May 5 sow Jun 23 – Aug 1
Lettuce Feb 22 – Mar 22 Mar 29 – May 23, Jul 31 – Aug 26 sow Jun 11 – Aug 1, Sep 7 – Oct 25
Spinach – Mar 17 – May 20 sow Jun 5 – Jul 26
Kale Feb 10 – Mar 17 Mar 24 – Aug 20 sow Jun 18 – Nov 29
Cabbage Feb 17 – Mar 24, May 18 – Jun 22 Apr 7 – May 18, Jul 6 – Aug 9 plant out Jul 2 – Aug 16, Aug 31 – Nov 5
Broccoli Feb 17 – Mar 24, May 24 – Jun 28 Apr 7 – May 28, Jul 12 – Aug 15 plant out Jun 25 – Aug 15, Aug 29 – Oct 29
Carrots – Apr 7 – Aug 12 sow Jun 28 – Nov 29
Beets (beetroot) – Apr 7 – Aug 20 sow Jun 21 – Nov 5
Radishes – Mar 24 – Jun 10, Aug 22 – Sep 13 sow May 19 – Jul 15, Sep 13 – Oct 29
Onions Jan 21 – Feb 25 Apr 1 – Jul 18 plant out Jul 19 – Oct 15
Garlic – Sep 23 – Oct 27 sow Jun 27 – Jul 17
Potatoes – Apr 14 – Jul 18 sow Jul 18 – Oct 15
Swiss chard – Apr 14 – Aug 23 sow Jun 19 – Nov 5
Basil May 6 – Jun 3 Jun 17 – Aug 16 plant out Jul 16 – Oct 1
Cilantro (coriander) – Apr 7 – Jun 1, Aug 22 – Sep 3 sow Jun 4 – Jul 31, Sep 26 – Oct 29
Parsley Feb 17 – Mar 24 Apr 14 – Aug 9 sow Jul 4 – Nov 14

Dates are for a typical year and the middle of the window is the safest. Sow a little at a time across a window rather than all at once. Cold snaps, heat waves, frost pockets and city warmth all shift the real dates; watch the forecast.

Frost dates in Spokane

Average last spring frost
April 26
Late frost (1 year in 10)
May 10
Average first autumn frost
October 15
Early frost (1 year in 10)
September 30
Frost-free growing season
171 days

“Average” is the date with an even chance of a later (spring) or earlier (autumn) frost: a night at or below 0 °C (32 °F) at screen height. Tender crops go out a week or two after the spring date, which brings the risk down to about one year in ten.

Source: NOAA 1991–2020 normals, Spokane Felts Fld (8 km from the city centre).

Climate at a glance

Hardiness zone
7a from station records
Average coldest winter night
-16°C3°F
Warmest month
July, highs 30°C85°F
Coldest month
December, lows -3°C26°F
Crops with an outdoor window
25 of 25

The zone follows the USDA scheme: bands of the average lowest temperature of the year, 10 °F wide, split into a and b halves. Worked out from the coldest night of each year 1991–2020 at the NOAA station. It tells you which perennials survive winter, not when to sow.

Temperature and rain by month

Average highAverage lowRainFreezing point

Average daily high and low temperature and monthly rain in Spokane-10°14°-5°23°0°32°5°41°10°50°15°59°20°68°25°77°30°86°35°95°00.0502.0100 mm3.9 inJanuary: 54 mm (2.1 in) of rainJanFebruary: 35 mm (1.4 in) of rainFebMarch: 41 mm (1.6 in) of rainMarApril: 37 mm (1.5 in) of rainAprMay: 41 mm (1.6 in) of rainMayJune: 32 mm (1.3 in) of rainJunJuly: 13 mm (0.5 in) of rainJulAugust: 12 mm (0.5 in) of rainAugSeptember: 16 mm (0.6 in) of rainSepOctober: 37 mm (1.5 in) of rainOctNovember: 58 mm (2.3 in) of rainNovDecember: 62 mm (2.4 in) of rainDecfreezingJanuary average high: 3°C (37°F)February average high: 5°C (42°F)March average high: 10°C (50°F)April average high: 15°C (58°F)May average high: 20°C (68°F)June average high: 24°C (76°F)July average high: 30°C (85°F)August average high: 29°C (85°F)September average high: 23°C (74°F)October average high: 15°C (59°F)November average high: 6°C (44°F)December average high: 2°C (36°F)January average low: -3°C (26°F)February average low: -3°C (27°F)March average low: 0°C (31°F)April average low: 2°C (36°F)May average low: 7°C (44°F)June average low: 10°C (50°F)July average low: 13°C (55°F)August average low: 12°C (54°F)September average low: 8°C (46°F)October average low: 2°C (36°F)November average low: -1°C (30°F)December average low: -3°C (26°F)
MonthHighLowMeanRain
January3°C37°F-3°C26°F0°C31°F54 mm2.1 in
February5°C42°F-3°C27°F1°C34°F35 mm1.4 in
March10°C50°F0°C31°F5°C40°F41 mm1.6 in
April15°C58°F2°C36°F8°C47°F37 mm1.5 in
May20°C68°F7°C44°F13°C56°F41 mm1.6 in
June24°C76°F10°C50°F17°C63°F32 mm1.3 in
July30°C85°F13°C55°F21°C70°F13 mm0.5 in
August29°C85°F12°C54°F21°C69°F12 mm0.5 in
September23°C74°F8°C46°F16°C60°F16 mm0.6 in
October15°C59°F2°C36°F9°C48°F37 mm1.5 in
November6°C44°F-1°C30°F3°C37°F58 mm2.3 in
December2°C36°F-3°C26°F-1°C31°F62 mm2.4 in

Monthly averages 1991–2020 from TerraClimate (about 4 km grid).

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