Cool-Season Vegetable

When to Plant Spinach in Kansas

Fast from seed to salad. Spinach bolts in heat, so plant early in spring and again in fall.

The Short Answer

Spinach are cold-tolerant and do well in Kansas's varied climate. You can direct sow 6 weeks before your last frost — that's as early as Apr 20 - May 5 in Northern Kansas. Kansas gardeners can also plant a fall crop. Prairie soils in east — rich and deep. More alkaline and thinner soils in west. Wind erosion can be...

Kansas Frost Dates

Your planting dates depend on which part of Kansas you're in. Here are the frost date ranges by region:

Region Zones Last Frost (Spring) First Frost (Fall)
Northern Kansas 5b, 6a Apr 20 - May 5 Oct 1 - Oct 15
Central Kansas 6a, 6b Apr 10 - Apr 25 Oct 10 - Oct 25
Southern Kansas 6b, 7a Apr 1 - Apr 15 Oct 15 - Nov 1

Spinach Planting Schedule for Kansas

Northern Kansas (Zones 5b, 6a)

Average last frost: Apr 20 - May 5 · Average first frost: Oct 1 - Oct 15

Direct Sow
6 wks before frost
Fall Planting
6 wks before first frost

Central Kansas (Zones 6a, 6b)

Average last frost: Apr 10 - Apr 25 · Average first frost: Oct 10 - Oct 25

Direct Sow
6 wks before frost
Fall Planting
6 wks before first frost

Southern Kansas (Zones 6b, 7a)

Average last frost: Apr 1 - Apr 15 · Average first frost: Oct 15 - Nov 1

Direct Sow
6 wks before frost
Fall Planting
6 wks before first frost

Growing Spinach in Kansas

Spinach in Kansas's Climate

Spinach thrives in your spring and fall cool windows. Direct sow 4 weeks before last frost and succession plant every 2 weeks through mid-May. Resume sowing in late August. When summer temperatures consistently exceed 75°F, spinach bolts within days — pull plants and switch to heat-tolerant greens like Swiss chard.

Soil Considerations for Kansas

Prairie soils in east — rich and deep. More alkaline and thinner soils in west. Wind erosion can be an issue.

Kansas Climate & Growing Season

Hot summers with strong winds. Severe thunderstorms and hail risk. Drier in the west. Good growing conditions for heat-loving crops. Spinach can handle frost well, which is an advantage in Kansas's climate. You can push planting dates earlier in spring and extend into fall.

Growing season length varies across Kansas: Northern Kansas (5b, 6a) has a last frost around Apr 20 - May 5, while Southern Kansas (6b, 7a) sees frost end around Apr 1 - Apr 15. This difference matters for spinach — adjust your planting dates to match your specific region.

Growing Tips

Direct sow as soon as soil can be worked in spring. For fall, plant 6-8 weeks before first frost.

Companion Planting

Plant spinach alongside these companions for better growth:

Strawberries Peas Radishes

The Bottom Line

Spinach can be grown successfully across Kansas, but your exact planting dates depend on which region you're in. Northern Kansas gardeners should plan around a Apr 20 - May 5 last frost, while those in Southern Kansas can typically plant earlier. For exact dates based on your zip code, use our free planting date finder.

Related Guides

Spinach Growing Guide National planting guide with all states Kansas Planting Calendar All plants for Kansas Spinach in Alabama Alabama planting dates Spinach in Alaska Alaska planting dates Spinach in Arizona Arizona planting dates Spinach in Arkansas Arkansas planting dates
Note: All dates are based on NOAA 30-year Climate Normals and represent historical averages, not predictions for any specific year. Always check your local weather forecast before planting frost-sensitive crops. Learn about our data sources.

Last reviewed: March 29, 2026

Ready to Start Planting?

Enter your zip code and pick your plant. We'll tell you exactly when to plant, start seeds, and harvest — based on where you live.

Find Your Planting Dates