FrostCal

When to Plant Zucchini in Utah

In a typical Utah location, start seeds indoors Apr 3 – Apr 10, then sow outdoors May 1 – May 15, then transplant outdoors May 1 – May 8. Across the state, the outdoor planting window starts as early as Mar 21 in Saint George and as late as Jun 11 in Heber City.

Method Direct sow
Days to maturity 45–55 days

Fast-growing squash; direct sow 1-3 weeks after last frost, or start indoors 2-3 weeks early for a head start.

Zucchini Planting Dates by City

CityStart indoorsDirect sowTransplant
Salt Lake CityMar 10 – Mar 17Apr 7 – Apr 21Apr 7 – Apr 14
West Valley CityMar 18 – Mar 25Apr 15 – Apr 29Apr 15 – Apr 22
ProvoMar 28 – Apr 4Apr 25 – May 9Apr 25 – May 2
West JordanApr 8 – Apr 15May 6 – May 20May 6 – May 13
OremMar 29 – Apr 5Apr 26 – May 10Apr 26 – May 3
SandyApr 8 – Apr 15May 6 – May 20May 6 – May 13
OgdenMar 31 – Apr 7Apr 28 – May 12Apr 28 – May 5
LaytonMar 29 – Apr 5Apr 26 – May 10Apr 26 – May 3
Saint GeorgeFeb 21 – Feb 28Mar 21 – Apr 4Mar 21 – Mar 28
South JordanMar 28 – Apr 4Apr 25 – May 9Apr 25 – May 2
MillcreekApr 4 – Apr 11May 2 – May 16May 2 – May 9
TaylorsvilleMar 10 – Mar 17Apr 7 – Apr 21Apr 7 – Apr 14
LehiApr 9 – Apr 16May 7 – May 21May 7 – May 14
LoganApr 17 – Apr 24May 15 – May 29May 15 – May 22
MurrayApr 4 – Apr 11May 2 – May 16May 2 – May 9
DraperMar 28 – Apr 4Apr 25 – May 9Apr 25 – May 2
BountifulApr 4 – Apr 11May 2 – May 16May 2 – May 9
RivertonMar 28 – Apr 4Apr 25 – May 9Apr 25 – May 2
Pleasant GroveMar 27 – Apr 3Apr 24 – May 8Apr 24 – May 1
RoyApr 1 – Apr 8Apr 29 – May 13Apr 29 – May 6
Spanish ForkApr 4 – Apr 11May 2 – May 16May 2 – May 9
KearnsMar 18 – Mar 25Apr 15 – Apr 29Apr 15 – Apr 22
Cottonwood HeightsApr 8 – Apr 15May 6 – May 20May 6 – May 13
TooeleApr 11 – Apr 18May 9 – May 23May 9 – May 16
MidvaleApr 8 – Apr 15May 6 – May 20May 6 – May 13
SpringvilleApr 4 – Apr 11May 2 – May 16May 2 – May 9
HolladayApr 8 – Apr 15May 6 – May 20May 6 – May 13
HerrimanMar 28 – Apr 4Apr 25 – May 9Apr 25 – May 2
ClearfieldApr 8 – Apr 15May 6 – May 20May 6 – May 13
KaysvilleMar 29 – Apr 5Apr 26 – May 10Apr 26 – May 3

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 zucchini in Utah?

In a typical Utah location, start seeds indoors Apr 3 – Apr 10, then sow outdoors May 1 – May 15, then transplant outdoors May 1 – May 8. Across the state, the outdoor planting window starts as early as Mar 21 in Saint George and as late as Jun 11 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 zucchini take to grow?

Zucchini typically take 45–55 days from planting to harvest. Fast-growing squash; direct sow 1-3 weeks after last frost, or start indoors 2-3 weeks early for a head start.

Other Crops in Utah

When to plant zucchini in other states

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