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When to Plant Sweet Corn in Sevier County, UT

Sweet corn is bred for high sugar content in its kernels, which convert to starch rapidly after harvest. Modern supersweet varieties hold their sweetness longer.

Sevier County, Utah is in USDA Zone 6a. The average last spring frost is May 19 and the first fall frost is September 30, giving you a growing season of approximately 134 days.

At an elevation of 8,049 feet, Sevier County receives approximately 20.6 inches of rainfall annually with predominantly loam soil. Summer highs average 88°F, providing good warmth for Sweet Corn during the growing season.

Sevier County, UT (Zone 6a) Short season
134 days
Last Spring Frost May 19
134 growing days
First Fall Frost September 30

Sevier County Soil Profile

Soil Type

Loam

Soil pH

6.0-7.0

Drainage

Well Drained

Sweet Corn Planting Timeline — Sevier County, UT

Sweet Corn Planting Calendar

Activity When Date Range
Direct Sow May 26 May 26 – Jun 16
Harvest July 28 Jul 28 – Sep 8

Plant 1" deep · 12" apart · Rows 36" apart

Month-by-Month Timeline

MonthActivities
January
February
March
April
May Direct Sow
June Direct Sow
July Harvest
August Harvest
September Harvest
October
November
December

Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

Moderate — regular watering

📅 Days to Maturity

60–90 days

🧪 Soil pH

Needs 6–7 · Your soil: N/A

🗺️ USDA Zone

Zone 6a

📆 Growing Season

134 days in Sevier County

Growing Tips for Sevier County

Plant in blocks of at least 4 rows for wind pollination. Direct sow after soil is warm. Isolate supersweet varieties from other corn types to prevent cross-pollination.

Companion Planting

Good Companions

Avoid Planting Near

  • Tomatoes

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Sweet Corn in Sevier County, UT?

Sevier County is in Zone 6a with an average last frost of May 19. Plan your Sweet Corn planting based on this frost date — see the calendar above for exact timing.

What planting zone is Sevier County, UT?

Sevier County, Utah is in USDA Hardiness Zone 6a. The average last spring frost is May 19 and first fall frost is September 30.

🌱

Your Sevier County Garden Planner — Free

A 22-page printable planner built for Sevier County (Zone 6a). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.

Instant PDF download. No spam, unsubscribe any time.

Data sources: USDA Plant Hardiness Zone Map (2023), NOAA 30-Year Climate Normals. Frost dates are based on 50% probability averages for Sevier County, UT. Local conditions may vary. Last updated: June 2026.

Sources & credits

Every number on this page traces back to a primary horticulture or government data source. Click through to verify.