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When to Plant Celeriac in Ellis County, KS

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.

Ellis County, Kansas is in USDA Zone 6a. The average last spring frost is April 24 and the first fall frost is October 15, giving you a growing season of approximately 174 days.

At an elevation of 664 feet, Ellis County receives approximately 20.2 inches of rainfall annually with predominantly loam soil. Summer highs average 90ยฐF, providing good warmth for Celeriac during the growing season.

Ellis County, KS (Zone 6a) Moderate season
174 days
Last Spring Frost April 24
174 growing days
First Fall Frost October 15

Ellis County Soil Profile

Soil Type

Loam

Soil pH

6.5-7.2

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (34 days to spare)
Start indoors: Mar 13 Transplant: Apr 17 🍅 Harvest: Jul 31 – Sep 4
Recommended (50%) ✓ Fits season (34 days to spare)
Start indoors: Mar 20 Transplant: Apr 24 🍅 Harvest: Aug 7 – Sep 11
Safe Start (90%) ✓ Fits season (30 days to spare)
Start indoors: Apr 6 Transplant: May 11 🍅 Harvest: Aug 24 – Sep 28

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.

Soil Compatibility in Ellis County

How your county's soil matches Celeriac's growing requirements.

Soil pH

Your soil pH (6.5โ€“7.2) overlaps with Celeriac's range (6.0โ€“7.0), though not a perfect match.

Soil Texture

The loam soil in Ellis County is excellent for Celeriac โ€” good drainage, moisture retention, and nutrient holding capacity.

Organic Matter

Organic matter is moderate (3.4%). Annual compost additions will help Celeriac.

How to Plant Celeriac

1"
Planting Depth
15"
Between Plants
24"
Between Rows

Fall planting: Sow 10 weeks before your first frost date for a fall harvest.

Plant Water Budget

Plant needs
0.9″/week
Rainfall provides
0.5″/week
You supply
0.5″/week
Watering frequency 1-2 times/week
Season total 766 gal / 100 sq ft
Drought risk

Water stress score is 8/10 โ€” consider drought-tolerant varieties and mulching

Monthly Watering Guide for Celeriac

Celeriac needs approximately 0.9 inches of water per week (3.9" per month). Here's how your county's rainfall compares month by month.

Month Celeriac Needs Rainfall You Supplement Action
Jan โ€” 0.5" 0" โ„๏ธ Dormant
Feb โ€” 0.6" 0" โ„๏ธ Dormant
Mar โ€” 1.5" 0" โ„๏ธ Dormant
Apr 3.9" 2.1" 1.8" ๐Ÿ’ง Light watering
May 3.9" 2.8" 1.1" ๐Ÿ’ง Light watering
Jun 3.9" 3.4" 0.5" ๐Ÿ’ง Light watering
Jul 3.9" 2.6" 1.3" ๐Ÿ’ง Light watering
Aug 3.9" 2.5" 1.4" ๐Ÿ’ง Light watering
Sep 3.9" 1.7" 2.2" ๐Ÿšฟ Regular watering
Oct 3.9" 1.2" 2.7" ๐Ÿšฟ Regular watering
Nov โ€” 0.8" 0" โ„๏ธ Dormant
Dec โ€” 0.6" 0" โ„๏ธ Dormant

Water needs are for active growing months only (Aprโ€“Oct in Ellis County). Supplement amounts are based on average rainfall โ€” actual needs vary with temperature, soil, and mulching.

Celeriac Heat Requirements (GDD)

What are Growing Degree Days (GDD)?

Growing Degree Days measure the total warmth your plants receive during the growing season. Think of it as a "heat bank" โ€” every day above 50ยฐF deposits warmth that helps your plants grow.

Each plant needs a certain amount of accumulated heat to mature. If your county provides more GDD than the plant needs, it's a great fit. If it's close, you may want to choose faster-maturing varieties or start seeds indoors to get a head start.

Celeriac needs ~1,925 GDD — county provides 3,045 GDD Excellent fit

Celeriac Planting Timeline โ€” Ellis County, KS

Celeriac Planting Calendar

Activity When Date Range
Start Indoors March 20 Mar 20 โ€“ Apr 3
Transplant Outdoors April 24 Apr 24 โ€“ May 8
Direct Sow April 10 Apr 10 โ€“ May 1
Harvest August 7 Aug 7 โ€“ Sep 11
Fall Sowing August 6 Aug 6 โ€“ Aug 20

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

โ˜€๏ธ Sun

Full Sun (6-8+ hours)

๐Ÿ’ง Water

0.9"/week ยท 1-2 times/week

๐Ÿ“… Days to Maturity

100โ€“120 days

๐Ÿงช Soil pH

Needs 6โ€“7 ยท Your soil: acceptable

๐Ÿ—บ๏ธ USDA Zone

Zone 6a

๐Ÿ“† Growing Season

174 days in Ellis County

Growing Tips for Celeriac in Ellis County

Direct sow Celeriac outdoors after April 24 in Ellis County when soil has warmed and frost danger has passed.

Common pests for Celeriac in this region include carrot rust fly and parsleyworm. Use row covers early in the season and inspect plants weekly.

Ellis County receives only 20" of rain annually. Celeriac needs consistent moisture โ€” install drip irrigation or water deeply 2-3 times per week.

General growing tips

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 Ellis County, KS?

Ellis County is in Zone 6a with an average last frost of April 24. Plan your Celeriac planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is Ellis County, KS?

Ellis County, Kansas is in USDA Hardiness Zone 6a. The average last spring frost is April 24 and first fall frost is October 15.

๐ŸŒฑ

Plan Your Garden with Confidence

Get our free Garden Planner โ€” designed to help Ellis County gardeners in Zone 6a organize planting dates, track what's growing, and never miss a planting window.

Get Your Free Garden Planner →

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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 Ellis County, KS. Local conditions may vary. Last updated: April 2026.