FrostCal

When to Plant Nasturtiums in Wyoming

In a typical Wyoming location, sow outdoors May 24 – Jun 7. 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 Direct sow
Days to maturity 50–65 days

Frost-tender, resents root disturbance; direct sow 1-3 weeks after last frost once soil has warmed.

Nasturtiums Planting Dates by City

CityDirect sow
CheyenneMay 21 – Jun 4
CasperMay 17 – May 31
GilletteMay 22 – Jun 5
LaramieJun 14 – Jun 28
Rock SpringsMay 31 – Jun 14
SheridanMay 28 – Jun 11
Green RiverMay 31 – Jun 14
EvanstonJun 19 – Jul 3
RivertonMay 19 – Jun 2
JacksonFrost-free: year-round planting
CodyMay 19 – Jun 2
RawlinsMay 24 – Jun 7
LanderMay 25 – Jun 8
TorringtonMay 18 – Jun 1
DouglasMay 26 – Jun 9
PowellMay 26 – Jun 9
RanchettesMay 19 – Jun 2
WorlandMay 11 – May 25
BuffaloMay 31 – Jun 14
South GreeleyMay 21 – Jun 4

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 nasturtiums in Wyoming?

In a typical Wyoming location, sow outdoors May 24 – Jun 7. 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 nasturtiums take to grow?

Nasturtiums typically take 50–65 days from planting to harvest. Frost-tender, resents root disturbance; direct sow 1-3 weeks after last frost once soil has warmed.

Other Crops in Wyoming

When to plant nasturtiums in other states

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