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When to Plant Daffodils in Wyoming

Deer-proof, squirrel-proof, and virtually indestructible. Daffodils naturalize and multiply, coming back bigger each year.

The Short Answer

Daffodils are planted in fall in Wyoming, 8 weeks before your first frost date. That means planting around Sep 10 - Sep 25 in Eastern Wyoming.

Wyoming Frost Dates

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

Region Zones Last Frost (Spring) First Frost (Fall)
Eastern Wyoming 4a, 4b, 5a May 10 - May 30 Sep 10 - Sep 25
Western Wyoming 3a, 3b, 4a May 25 - Jun 15 Aug 25 - Sep 15
Southern Wyoming 4b, 5a, 5b May 15 - Jun 1 Sep 5 - Sep 20

Daffodils Planting Schedule for Wyoming

Eastern Wyoming (Zones 4a, 4b, 5a)

Average last frost: May 10 - May 30 · Average first frost: Sep 10 - Sep 25

Fall Planting
8 wks before first frost

Western Wyoming (Zones 3a, 3b, 4a)

Average last frost: May 25 - Jun 15 · Average first frost: Aug 25 - Sep 15

Fall Planting
8 wks before first frost

Southern Wyoming (Zones 4b, 5a, 5b)

Average last frost: May 15 - Jun 1 · Average first frost: Sep 5 - Sep 20

Fall Planting
8 wks before first frost

Growing Daffodils in Wyoming

Daffodils in Wyoming's Climate

Your cold winters provide perfect chilling for daffodils. Plant bulbs in September-October and enjoy reliable spring bloom for decades. Daffodils are the most worry-free spring bulb — squirrels and deer leave them alone (the bulbs are toxic), and they multiply each year. One planting truly lasts a lifetime in cold climates.

Soil Considerations for Wyoming

Alkaline, thin soils. Dry climate means little organic matter naturally. Wind erosion a significant challenge. Heavy amendment needed.

Wyoming Climate & Growing Season

Short growing season. Very windy — wind protection essential for gardens. Low humidity. Cool nights even in summer at elevation. Daffodils can handle frost well, which is an advantage in Wyoming's climate. You can push planting dates earlier in spring and extend into fall.

Growing season length varies across Wyoming: Eastern Wyoming (4a, 4b, 5a) has a last frost around May 10 - May 30, while Southern Wyoming (4b, 5a, 5b) sees frost end around May 15 - Jun 1. This difference matters for daffodils — adjust your planting dates to match your specific region.

Growing Tips

Let foliage die back naturally after blooming — it feeds next year's flowers. Plant at 3x the bulb's height deep.

Companion Planting

Plant daffodils alongside these companions for better growth:

Tulips Hyacinths Grape Hyacinths

The Bottom Line

Daffodils can be grown successfully across Wyoming, but your exact planting dates depend on which region you're in. Eastern Wyoming gardeners should plan around a May 10 - May 30 last frost, while those in Southern Wyoming can typically plant later. For exact dates based on your zip code, use our free planting date finder.

Related Guides

Daffodils Growing Guide National planting guide with all states Wyoming Planting Calendar All plants for Wyoming Daffodils in Alabama Alabama planting dates Daffodils in Alaska Alaska planting dates Daffodils in Arizona Arizona planting dates Daffodils 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

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