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When to Plant Celeriac in Lancaster County, NE

Celeriac is a celery relative grown for its knobby, flavorful root rather than its stalks. It has a rich celery flavor and is excellent roasted, mashed, or in soups.

Lancaster County, Nebraska is in USDA Zone 5a. The average last spring frost is April 22 and the first fall frost is October 11, giving you a growing season of approximately 172 days.

At an elevation of 881 feet, Lancaster County receives approximately 31.5 inches of rainfall annually with predominantly loam soil. Summer highs average 83ยฐF, so choose short-season varieties of Celeriac to ensure they mature before fall.

Lancaster County, NE (Zone 5a) Moderate season
172 days
Last Spring Frost April 22
172 growing days
First Fall Frost October 11

Lancaster County Soil Profile

Soil Type

Loam

Soil pH

6.7-7.8

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (33 days to spare)
Start indoors: Mar 12 Transplant: Apr 16 🍅 Harvest: Jul 30 – Sep 3
Recommended (50%) ✓ Fits season (32 days to spare)
Start indoors: Mar 18 Transplant: Apr 22 🍅 Harvest: Aug 5 – Sep 9
Safe Start (90%) ✓ Fits season (36 days to spare)
Start indoors: Mar 29 Transplant: May 3 🍅 Harvest: Aug 16 – Sep 20

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
1.5″/week
Rainfall provides
0.8″/week
You supply
0.9″/week
Watering frequency 2-3 times/week
Season total 1,342 gal / 100 sq ft
Drought risk

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

Celeriac needs ~1,348 GDD — county provides 2,107 GDD Excellent fit

Celeriac Planting Timeline โ€” Lancaster County, NE

Celeriac Planting Calendar

Activity When Date Range
Start Indoors March 18 Mar 18 โ€“ Apr 1
Transplant Outdoors April 22 Apr 22 โ€“ May 6
Direct Sow April 8 Apr 8 โ€“ Apr 29
Fall Sowing August 2 Aug 2 โ€“ Aug 16
Harvest August 5 Aug 5 โ€“ Sep 9

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

Month-by-Month Timeline

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

Growing Conditions

Sun

Full Sun (6-8+ hours)

Water

High โ€” keep soil consistently moist

Days to Maturity

100โ€“120 days

Soil pH

6 โ€“ 7

USDA Zone

Zone 5a

Growing Season

172 days

Growing Tips for Lancaster County

Start seeds indoors 10-12 weeks before last frost. Remove side roots as they develop to encourage a single large bulb. Harvest after a light frost for best flavor.

Companion Planting

Good Companions

Avoid Planting Near

  • Carrots
  • Parsnip

Level Up Your Garden

Frequently Asked Questions

When should I plant Celeriac in Lancaster County, NE?

Lancaster County is in Zone 5a with an average last frost of April 22. Plan your Celeriac planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is Lancaster County, NE?

Lancaster County, Nebraska is in USDA Hardiness Zone 5a. The average last spring frost is April 22 and first fall frost is October 11.

๐ŸŒฑ

Plan Your Garden with Confidence

Get our free Garden Planner โ€” designed to help Lancaster County gardeners in Zone 5a 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 Lancaster County, NE. Local conditions may vary. Last updated: April 2026.