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When to plant Parsnip in Webster County, IA

For Webster County, gardeners: plant Parsnip April 14 through May 5 once soil reads 50°F. A second sowing from July 28 to August 11 extends the harvest into fall.

When to Plant Parsnip in Webster County, IA

Parsnips are a sweet, nutty root vegetable that develops best flavor after exposure to frost. They require a long growing season but reward patient gardeners.

Webster County, Iowa is in USDA Zone 5a. The average last spring frost is April 28 and the first fall frost is October 6, giving you a growing season of approximately 161 days.

At an elevation of 1,065 feet, Webster County receives approximately 30.2 inches of rainfall annually with predominantly silt loam soil. Summer highs average 80°F, so choose short-season varieties of Parsnip to ensure they mature before fall.

Webster County, IA (Zone 5a) Moderate season
161 days
Last Spring Frost April 28
161 growing days
First Fall Frost October 6

Webster County Soil Profile

Soil Type

Silt Loam

Soil pH

6.0-7.0

Drainage

Well Drained

Parsnip Planting Timeline — Webster County, IA

Parsnip Planting Calendar

Activity When Date Range
Direct Sow April 14 Apr 14 – May 5
Harvest July 28 Jul 28 – Sep 8
Fall Sowing July 28 Jul 28 – Aug 11

Plant 1" deep · 15" apart · Rows 24" apart

Month-by-Month Timeline

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

Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

Moderate — regular watering

📅 Days to Maturity

100–130 days

🧪 Soil pH

Needs 6–7 · Your soil: N/A

🗺️ USDA Zone

Zone 5a

📆 Growing Season

161 days in Webster County

Growing Tips for Webster County

Use only fresh seed as parsnip seed viability declines rapidly. Sow directly in spring in deeply worked soil. Leave roots in the ground through winter for sweetest flavor.

Companion Planting

Good Companions

Avoid Planting Near

  • Carrots
  • Celery

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Parsnip in Webster County, IA?

Webster County is in Zone 5a with an average last frost of April 28. Plan your Parsnip planting based on this frost date — see the calendar above for exact timing.

What planting zone is Webster County, IA?

Webster County, Iowa is in USDA Hardiness Zone 5a. The average last spring frost is April 28 and first fall frost is October 6.

When should I plant Parsnip in Webster County, IA?

In Webster County, IA, plant Parsnip after the last frost (around April 28) and before the first frost (around October 6). Best results when soil holds above 50°F.

What growing zone is Webster County, IA for Parsnip?

Webster County sits in USDA Zone 5a. Parsnip grows reliably in zones 2a through 9b, so it's a good fit here.

Can Parsnip grow in Webster County's climate?

Yes — Parsnip grows well in Webster County's temperate climate. Webster County averages a 161-day frost-free season, with last frost around April 28 and first frost around October 6.

🌱

Your Webster County Garden Planner — Free

A 22-page printable planner built for Webster County (Zone 5a). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.

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

Sources & credits

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