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When to Plant Parsnip in Bear Lake County, ID

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.

Bear Lake County, Idaho is in USDA Zone 4b. The average last spring frost is May 24 and the first fall frost is September 24, giving you a growing season of approximately 123 days.

At an elevation of 5,220 feet, Bear Lake County receives approximately 18.6 inches of rainfall annually with predominantly loam soil. Summer highs average 83ยฐF, so choose short-season varieties of Parsnip to ensure they mature before fall. With low rainfall, drip irrigation is essential for growing Parsnip successfully. Mulch heavily to conserve soil moisture.

Bear Lake County, ID (Zone 4b) Short season
123 days
Last Spring Frost May 24
123 growing days
First Fall Frost September 24

Bear Lake County Soil Profile

Soil Type

Loam

Soil pH

6.7-8.2

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✗ May not fit
Transplant: May 6 🍅 Harvest: Aug 19 – Sep 30
Recommended (50%) ✗ May not fit
Transplant: May 24 🍅 Harvest: Sep 6 – Oct 18
Safe Start (90%) ✗ May not fit
Transplant: Jun 22 🍅 Harvest: Oct 5 – Nov 16

Percentages indicate frost risk at transplant. The 70% safe window means there is a 30% chance of frost after transplant — suitable for cold-hardy crops or gardeners with frost protection. The 90% safe window is best for tender plants.

Plant Water Budget

Plant needs
1.0″/week
Rainfall provides
0.6″/week
You supply
0.4″/week
Watering frequency 1-2 times/week
Season total 479 gal / 100 sq ft
Drought risk

Water stress score is 6/10 โ€” consider drought-tolerant varieties and mulching

Parsnip needs ~1,409 GDD — county provides 1,506 GDD Good fit

Parsnip Planting Timeline โ€” Bear Lake County, ID

Parsnip Planting Calendar

Activity When Date Range
Direct Sow May 17 May 17 โ€“ Jun 7
Fall Sowing July 2 Jul 2 โ€“ Jul 16
Harvest August 30 Aug 30 โ€“ Oct 11

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

Month-by-Month Timeline

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

Growing Conditions

Sun

Full Sun (6-8+ hours)

Water

Moderate โ€” regular watering

Days to Maturity

100โ€“130 days

Soil pH

6 โ€“ 7

USDA Zone

Zone 4b

Growing Season

123 days

Growing Tips for Bear Lake 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

Level Up Your Garden

Frequently Asked Questions

When should I plant Parsnip in Bear Lake County, ID?

Bear Lake County is in Zone 4b with an average last frost of May 24. Plan your Parsnip planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is Bear Lake County, ID?

Bear Lake County, Idaho is in USDA Hardiness Zone 4b. The average last spring frost is May 24 and first fall frost is September 24.

๐ŸŒฑ

Plan Your Garden with Confidence

Get our free Garden Planner โ€” designed to help Bear Lake County gardeners in Zone 4b organize planting dates, track what's growing, and never miss a planting window.

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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 Bear Lake County, ID. Local conditions may vary. Last updated: April 2026.