FrostCal

When to Plant Onions in Nevada

In a typical Nevada location, start seeds indoors Jan 5 – Jan 19, then transplant outdoors Feb 16 – Mar 2. Across the state, the outdoor planting window starts as early as Dec 23 in Henderson and as late as May 9 in Spring Creek.

Method Start indoors, then transplant
Days to maturity 90–120 days

Start seeds indoors 8-10 weeks before last frost (or use sets/transplants); set out 2-4 weeks before last frost, very cold-tolerant as seedlings.

Onions Planting Dates by City

CityStart indoorsTransplant
Las VegasNov 15 – Nov 29Dec 27 – Jan 10
HendersonNov 11 – Nov 25Dec 23 – Jan 6
RenoFeb 17 – Mar 3Mar 31 – Apr 14
North Las VegasNov 23 – Dec 7Jan 4 – Jan 18
ParadiseNov 11 – Nov 25Dec 23 – Jan 6
Sunrise ManorNov 23 – Dec 7Jan 4 – Jan 18
Spring ValleyNov 11 – Nov 25Dec 23 – Jan 6
EnterpriseNov 26 – Dec 10Jan 7 – Jan 21
SparksFeb 20 – Mar 6Apr 3 – Apr 17
Carson CityFeb 23 – Mar 9Apr 6 – Apr 20
WhitneyNov 11 – Nov 25Dec 23 – Jan 6
PahrumpJan 18 – Feb 1Mar 1 – Mar 15
WinchesterNov 11 – Nov 25Dec 23 – Jan 6
Summerlin SouthJan 2 – Jan 16Feb 13 – Feb 27
ElkoMar 20 – Apr 3May 1 – May 15
FernleyFeb 28 – Mar 14Apr 11 – Apr 25
Sun ValleyFeb 17 – Mar 3Mar 31 – Apr 14
MesquiteJan 5 – Jan 19Feb 16 – Mar 2
Boulder CityNov 12 – Nov 26Dec 24 – Jan 7
Spanish SpringsFeb 22 – Mar 8Apr 5 – Apr 19
Spring CreekMar 28 – Apr 11May 9 – May 23
Gardnerville RanchosMar 21 – Apr 4May 2 – May 16

Showing the 22 most populous of 22 Nevada cities. Dates are estimates from each city's NOAA frost normals and university extension timing guidelines. See all Nevada cities.

Frequently Asked Questions

When should I plant onions in Nevada?

In a typical Nevada location, start seeds indoors Jan 5 – Jan 19, then transplant outdoors Feb 16 – Mar 2. Across the state, the outdoor planting window starts as early as Dec 23 in Henderson and as late as May 9 in Spring Creek.

When is the last frost in Nevada?

The average last spring frost in Nevada ranges from January 20 in Henderson to June 6 in Spring Creek, based on NOAA 1991–2020 climate normals.

How long do onions take to grow?

Onions typically take 90–120 days from planting to harvest. Start seeds indoors 8-10 weeks before last frost (or use sets/transplants); set out 2-4 weeks before last frost, very cold-tolerant as seedlings.

Other Crops in Nevada

When to plant onions in other states

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