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When to Plant Celeriac in Putnam County, WV

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.

Putnam County, West Virginia is in USDA Zone 6b. The average last spring frost is April 25 and the first fall frost is October 20, giving you a growing season of approximately 178 days.

At an elevation of 2,650 feet, Putnam County receives approximately 46 inches of rainfall annually with predominantly silt loam soil. Summer highs average 91ยฐF, providing good warmth for Celeriac during the growing season.

Putnam County, WV (Zone 6b) Moderate season
178 days
Last Spring Frost April 25
178 growing days
First Fall Frost October 20

Putnam County Soil Profile

Soil Type

Silt Loam

Soil pH

5.6-6.5

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (44 days to spare)
Start indoors: Mar 12 Transplant: Apr 16 🍅 Harvest: Jul 30 – Sep 3
Recommended (50%) ✓ Fits season (38 days to spare)
Start indoors: Mar 21 Transplant: Apr 25 🍅 Harvest: Aug 8 – Sep 12
Safe Start (90%) ✓ Fits season (30 days to spare)
Start indoors: Apr 11 Transplant: May 16 🍅 Harvest: Aug 29 – Oct 3

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
1.1″/week
Watering frequency Natural rainfall sufficient
Season total 0 gal / 100 sq ft
Drought risk

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

Celeriac needs ~2,008 GDD — county provides 3,248 GDD Excellent fit

Celeriac Planting Timeline โ€” Putnam County, WV

Celeriac Planting Calendar

Activity When Date Range
Start Indoors March 21 Mar 21 โ€“ Apr 4
Transplant Outdoors April 25 Apr 25 โ€“ May 9
Direct Sow April 11 Apr 11 โ€“ May 2
Fall Sowing August 11 Aug 11 โ€“ Aug 25
Harvest August 8 Aug 8 โ€“ Sep 12

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 Direct Sow
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 6b

Growing Season

178 days

Growing Tips for Putnam 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 Putnam County, WV?

Putnam County is in Zone 6b with an average last frost of April 25. Plan your Celeriac planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is Putnam County, WV?

Putnam County, West Virginia is in USDA Hardiness Zone 6b. The average last spring frost is April 25 and first fall frost is October 20.

๐ŸŒฑ

Plan Your Garden with Confidence

Get our free Garden Planner โ€” designed to help Putnam County gardeners in Zone 6b 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 Putnam County, WV. Local conditions may vary. Last updated: April 2026.