When to Plant Brussels Sprouts in Wyoming

In a typical Wyoming location, start seeds indoors Mar 29 – Apr 12, then transplant outdoors Apr 26 – May 10. Across the state, the outdoor planting window starts as early as Apr 13 in Worland and as late as May 22 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 90–110 days

Long-season crop best timed to mature after a light fall frost for sweetest flavor; start indoors 5-7 weeks before last frost.

Brussels Sprouts Planting Dates by City

CityStart indoorsTransplant
CheyenneMar 26 – Apr 9Apr 23 – May 7
CasperMar 22 – Apr 5Apr 19 – May 3
GilletteMar 27 – Apr 10Apr 24 – May 8
LaramieApr 19 – May 3May 17 – May 31
Rock SpringsApr 5 – Apr 19May 3 – May 17
SheridanApr 2 – Apr 16Apr 30 – May 14
Green RiverApr 5 – Apr 19May 3 – May 17
EvanstonApr 24 – May 8May 22 – Jun 5
RivertonMar 24 – Apr 7Apr 21 – May 5
JacksonFrost-free: year-round planting
CodyMar 24 – Apr 7Apr 21 – May 5
RawlinsMar 29 – Apr 12Apr 26 – May 10
LanderMar 30 – Apr 13Apr 27 – May 11
TorringtonMar 23 – Apr 6Apr 20 – May 4
DouglasMar 31 – Apr 14Apr 28 – May 12
PowellMar 31 – Apr 14Apr 28 – May 12
RanchettesMar 24 – Apr 7Apr 21 – May 5
WorlandMar 16 – Mar 30Apr 13 – Apr 27
BuffaloApr 5 – Apr 19May 3 – May 17
South GreeleyMar 26 – Apr 9Apr 23 – May 7

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 Brussels sprouts in Wyoming?

In a typical Wyoming location, start seeds indoors Mar 29 – Apr 12, then transplant outdoors Apr 26 – May 10. Across the state, the outdoor planting window starts as early as Apr 13 in Worland and as late as May 22 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 Brussels sprouts take to grow?

Brussels Sprouts typically take 90–110 days from planting to harvest. Long-season crop best timed to mature after a light fall frost for sweetest flavor; start indoors 5-7 weeks before last frost.

Other Crops in Wyoming

When to plant Brussels sprouts in other states

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