Greenly

Kansas City: frost dates

United States

In Kansas City the last spring frost usually comes around 7 April and the first autumn frost around 1 November, which leaves about 208 frost-free days (median of 2016–2025). Tomato seedlings can go into open ground around 18 April.

Last spring frostaround 7 April
First autumn frostaround 1 November
Frost-free days208 days

Median of 2016–2025 for the 25 km grid cell of the city: the last day at or below 0 °C in spring and the first in autumn (ERA5 reanalysis via Open-Meteo). In a cold year a frost can come a week or two later — Greenly warns 48 hours ahead.

When to sow and plant

CropSow for seedlingsPlant out in a greenhouseOpen ground
Bell Pepper1 February16 April7 May
Chili Pepper12 February27 April18 May
Corn—24 Marchsow 14 April
Cucumber5 March16 April7 May
Eggplant5 February16 April7 May
Green Beans15 February24 March14 April
Melon23 February16 April7 May
Peas—24 Februarysow 17 March
Physalis11 February28 March18 April
Pumpkin19 February28 March18 April
Sweet Corn—24 Marchsow 14 April
Tomato30 January28 March18 April
Watermelon15 March16 April7 May
Zucchini24 February28 March18 April

Planting out: a week after the last frost once the soil is warm enough for the crop; frost-hardy crops three weeks before it; an unheated greenhouse three weeks earlier. Seedlings are sown so they are ready on that day.

Planted in autumn

CropPlant around
Crocus2 October
Daffodil2 October
Garlic2 October
Hyacinth2 October
Lily2 October
Tulip2 October

A month before the first autumn frost, so the roots grow before winter.

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