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When to Plant Celeriac in Washington County, MS

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.

Washington County, Mississippi is in USDA Zone 8a. The average last spring frost is March 6 and the first fall frost is November 15, giving you a growing season of approximately 254 days.

At an elevation of 258 feet, Washington County receives approximately 55.3 inches of rainfall annually with predominantly clay loam soil. Summer highs average 90Β°F, providing good warmth for Celeriac during the growing season. Clay soil retains moisture well for Celeriac, but amend with compost to improve drainage and prevent root rot. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Celeriac root diseases.

Washington County, MS (Zone 8a) Long season
254 days
Last Spring Frost March 6
254 growing days
First Fall Frost November 15

Washington County Soil Profile

Soil Type

Clay Loam

Soil pH

5.4-6.4

Drainage

Well Drained

Monthly Watering Guide for Celeriac

Celeriac needs approximately 1 inches of water per week (4.3" per month). Here's how your county's rainfall compares month by month.

Month Celeriac Needs Rainfall You Supplement Action
Jan β€” 4.1" 0" ❄️ Dormant
Feb β€” 4.3" 0" ❄️ Dormant
Mar 4.3" 5.5" 0" βœ… Rainfall sufficient
Apr 4.3" 4.1" 0.2" πŸ’§ Light watering
May 4.3" 4.6" 0" βœ… Rainfall sufficient
Jun 4.3" 5.2" 0" βœ… Rainfall sufficient
Jul 4.3" 6.1" 0" βœ… Rainfall sufficient
Aug 4.3" 5.6" 0" βœ… Rainfall sufficient
Sep 4.3" 4.5" 0" βœ… Rainfall sufficient
Oct 4.3" 3.6" 0.7" πŸ’§ Light watering
Nov 4.3" 3.9" 0.4" πŸ’§ Light watering
Dec β€” 3.7" 0" ❄️ Dormant

Water needs are for active growing months only (Mar–Nov in Washington County). Supplement amounts are based on average rainfall β€” actual needs vary with temperature, soil, and mulching.

Celeriac Planting Timeline β€” Washington County, MS

Celeriac Planting Calendar

Activity When Date Range
Start Indoors January 30 Jan 30 – Feb 13
Transplant Outdoors March 6 Mar 6 – Mar 20
Direct Sow February 20 Feb 20 – Mar 13
Harvest June 19 Jun 19 – Jul 24
Fall Sowing September 6 Sep 6 – Sep 20

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

Month-by-Month Timeline

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

Growing Conditions

β˜€οΈ Sun

Full Sun (6-8+ hours)

πŸ’§ Water

High β€” keep soil consistently moist

πŸ“… Days to Maturity

100–120 days

πŸ§ͺ Soil pH

Needs 6–7 Β· Your soil: N/A

πŸ—ΊοΈ USDA Zone

Zone 8a

πŸ“† Growing Season

254 days in Washington County

Growing Tips for Washington 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

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Celeriac in Washington County, MS?

Washington County is in Zone 8a with an average last frost of March 6. Plan your Celeriac planting based on this frost date β€” see the calendar above for exact timing.

What planting zone is Washington County, MS?

Washington County, Mississippi is in USDA Hardiness Zone 8a. The average last spring frost is March 6 and first fall frost is November 15.

🌱

Plan Your Garden with Confidence

Get our free Garden Planner β€” designed to help Washington County gardeners in Zone 8a 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 Washington County, MS. Local conditions may vary. Last updated: April 2026.