FrostCal

When to Plant Watermelon in Utah

In a typical Utah location, start seeds indoors Mar 27 – Apr 3, then transplant outdoors May 8 – May 15. Across the state, the outdoor planting window starts as early as Mar 28 in Saint George and as late as Jun 18 in Heber City.

Method Start indoors, then transplant
Days to maturity 70–90 days

Needs warm soil (65F+); start indoors 3-4 weeks before last frost, transplant 2-3 weeks after last frost.

Watermelon Planting Dates by City

CityStart indoorsTransplant
Salt Lake CityMar 3 – Mar 10Apr 14 – Apr 21
West Valley CityMar 11 – Mar 18Apr 22 – Apr 29
ProvoMar 21 – Mar 28May 2 – May 9
West JordanApr 1 – Apr 8May 13 – May 20
OremMar 22 – Mar 29May 3 – May 10
SandyApr 1 – Apr 8May 13 – May 20
OgdenMar 24 – Mar 31May 5 – May 12
LaytonMar 22 – Mar 29May 3 – May 10
Saint GeorgeFeb 14 – Feb 21Mar 28 – Apr 4
South JordanMar 21 – Mar 28May 2 – May 9
MillcreekMar 28 – Apr 4May 9 – May 16
TaylorsvilleMar 3 – Mar 10Apr 14 – Apr 21
LehiApr 2 – Apr 9May 14 – May 21
LoganApr 10 – Apr 17May 22 – May 29
MurrayMar 28 – Apr 4May 9 – May 16
DraperMar 21 – Mar 28May 2 – May 9
BountifulMar 28 – Apr 4May 9 – May 16
RivertonMar 21 – Mar 28May 2 – May 9
Pleasant GroveMar 20 – Mar 27May 1 – May 8
RoyMar 25 – Apr 1May 6 – May 13
Spanish ForkMar 28 – Apr 4May 9 – May 16
KearnsMar 11 – Mar 18Apr 22 – Apr 29
Cottonwood HeightsApr 1 – Apr 8May 13 – May 20
TooeleApr 4 – Apr 11May 16 – May 23
MidvaleApr 1 – Apr 8May 13 – May 20
SpringvilleMar 28 – Apr 4May 9 – May 16
HolladayApr 1 – Apr 8May 13 – May 20
HerrimanMar 21 – Mar 28May 2 – May 9
ClearfieldApr 1 – Apr 8May 13 – May 20
KaysvilleMar 22 – Mar 29May 3 – May 10

Showing the 30 most populous of 67 Utah cities. Dates are estimates from each city's NOAA frost normals and university extension timing guidelines. See all Utah cities.

Frequently Asked Questions

When should I plant watermelon in Utah?

In a typical Utah location, start seeds indoors Mar 27 – Apr 3, then transplant outdoors May 8 – May 15. Across the state, the outdoor planting window starts as early as Mar 28 in Saint George and as late as Jun 18 in Heber City.

When is the last frost in Utah?

The average last spring frost in Utah ranges from March 14 in Saint George to June 4 in Heber City, based on NOAA 1991–2020 climate normals.

How long do watermelon take to grow?

Watermelon typically take 70–90 days from planting to harvest. Needs warm soil (65F+); start indoors 3-4 weeks before last frost, transplant 2-3 weeks after last frost.

Other Crops in Utah

When to plant watermelon in other states

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