FrostCal

When to Plant Nasturtiums in North Dakota

In a typical North Dakota location, sow outdoors May 17 – May 31. Across the state, the outdoor planting window starts as early as May 11 in Wahpeton and as late as May 28 in Beulah.

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
FargoMay 12 – May 26
BismarckMay 17 – May 31
Grand ForksMay 17 – May 31
MinotMay 17 – May 31
West FargoMay 17 – May 31
WillistonMay 28 – Jun 11
DickinsonMay 27 – Jun 10
MandanMay 20 – Jun 3
JamestownMay 15 – May 29
WahpetonMay 11 – May 25
Devils LakeMay 13 – May 27
Watford CityMay 16 – May 30
Valley CityMay 20 – Jun 3
Minot Air Force BaseMay 18 – Jun 1
GraftonMay 11 – May 25
LincolnMay 21 – Jun 4
BeulahMay 28 – Jun 11
RugbyMay 24 – Jun 7
StanleyMay 24 – Jun 7
HoraceMay 11 – May 25

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

Frequently Asked Questions

When should I plant nasturtiums in North Dakota?

In a typical North Dakota location, sow outdoors May 17 – May 31. Across the state, the outdoor planting window starts as early as May 11 in Wahpeton and as late as May 28 in Beulah.

When is the last frost in North Dakota?

The average last spring frost in North Dakota ranges from May 4 in Wahpeton to May 21 in Beulah, 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 North Dakota

When to plant nasturtiums in other states

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