FrostCal

When to Plant Marigolds in Wyoming

In a typical Wyoming location, start seeds indoors Apr 5 – Apr 19, then transplant outdoors May 24 – May 31. Across the state, the outdoor planting window starts as early as May 11 in Worland and as late as Jun 19 in Evanston. 1 city in Wyoming is essentially frost-free and can plant on a year-round schedule.

Method Start indoors, then transplant
Days to maturity 45–60 days

Frost-tender; start indoors 4-6 weeks before last frost, transplant after all frost danger has passed.

Marigolds Planting Dates by City

CityStart indoorsTransplant
CheyenneApr 2 – Apr 16May 21 – May 28
CasperMar 29 – Apr 12May 17 – May 24
GilletteApr 3 – Apr 17May 22 – May 29
LaramieApr 26 – May 10Jun 14 – Jun 21
Rock SpringsApr 12 – Apr 26May 31 – Jun 7
SheridanApr 9 – Apr 23May 28 – Jun 4
Green RiverApr 12 – Apr 26May 31 – Jun 7
EvanstonMay 1 – May 15Jun 19 – Jun 26
RivertonMar 31 – Apr 14May 19 – May 26
JacksonFrost-free: year-round planting
CodyMar 31 – Apr 14May 19 – May 26
RawlinsApr 5 – Apr 19May 24 – May 31
LanderApr 6 – Apr 20May 25 – Jun 1
TorringtonMar 30 – Apr 13May 18 – May 25
DouglasApr 7 – Apr 21May 26 – Jun 2
PowellApr 7 – Apr 21May 26 – Jun 2
RanchettesMar 31 – Apr 14May 19 – May 26
WorlandMar 23 – Apr 6May 11 – May 18
BuffaloApr 12 – Apr 26May 31 – Jun 7
South GreeleyApr 2 – Apr 16May 21 – May 28

Showing the 20 most populous of 20 Wyoming cities. Dates are estimates from each city's NOAA frost normals and university extension timing guidelines. See all Wyoming cities.

Frequently Asked Questions

When should I plant marigolds in Wyoming?

In a typical Wyoming location, start seeds indoors Apr 5 – Apr 19, then transplant outdoors May 24 – May 31. Across the state, the outdoor planting window starts as early as May 11 in Worland and as late as Jun 19 in Evanston. 1 city in Wyoming is essentially frost-free and can plant on a year-round schedule.

When is the last frost in Wyoming?

The average last spring frost in Wyoming ranges from May 4 in Worland to June 12 in Evanston, based on NOAA 1991–2020 climate normals.

How long do marigolds take to grow?

Marigolds typically take 45–60 days from planting to harvest. Frost-tender; start indoors 4-6 weeks before last frost, transplant after all frost danger has passed.

Other Crops in Wyoming

When to plant marigolds in other states

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