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When to Plant Celeriac in Lee County, TX

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.

Lee County, Texas is in USDA Zone 8b. The average last spring frost is February 28 and the first fall frost is November 30, giving you a growing season of approximately 275 days.

At an elevation of 1,174 feet, Lee County receives approximately 59.1 inches of rainfall annually with predominantly clay soil. Summer highs average 97ยฐF, so Celeriac may need afternoon shade and extra watering during peak heat. 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.

Lee County, TX (Zone 8b) Year-round
275 days
Last Spring Frost February 28
275 growing days
First Fall Frost November 30

Lee County Soil Profile

Soil Type

Clay

Soil pH

7.1-8.2

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (135 days to spare)
Start indoors: Jan 10 Transplant: Feb 14 🍅 Harvest: May 30 – Jul 4
Recommended (50%) ✓ Fits season (135 days to spare)
Start indoors: Jan 24 Transplant: Feb 28 🍅 Harvest: Jun 13 – Jul 18
Safe Start (90%) ✓ Fits season (128 days to spare)
Start indoors: Feb 17 Transplant: Mar 24 🍅 Harvest: Jul 7 – Aug 11

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 Lee County

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

Soil pH

Your soil pH (7.1โ€“8.2) is more alkaline than Celeriac prefers (6.0โ€“7.0). Add sulfur or peat moss to lower pH.

Soil Texture

Your soil has 37% clay, which can cause forked or stunted roots for Celeriac. Use raised beds with loose, sandy mix for best results.

Organic Matter

Organic matter is moderate (2.7%). 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
0.9″/week
Watering frequency Only during dry spells
Season total 2 gal / 100 sq ft

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€” 1.6" 0" โ„๏ธ Dormant
Feb 3.9" 1.8" 2.1" ๐Ÿšฟ Regular watering
Mar 3.9" 4.3" 0" โœ… Rainfall sufficient
Apr 3.9" 5.8" 0" โœ… Rainfall sufficient
May 3.9" 8.6" 0" โœ… Rainfall sufficient
Jun 3.9" 9.5" 0" โœ… Rainfall sufficient
Jul 3.9" 8.1" 0" โœ… Rainfall sufficient
Aug 3.9" 7.3" 0" โœ… Rainfall sufficient
Sep 3.9" 5.2" 0" โœ… Rainfall sufficient
Oct 3.9" 3.4" 0.5" ๐Ÿ’ง Light watering
Nov 3.9" 1.8" 2.1" ๐Ÿšฟ Regular watering
Dec โ€” 1.7" 0" โ„๏ธ Dormant

Water needs are for active growing months only (Febโ€“Nov in Lee 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 ~2,502 GDD — county provides 6,279 GDD Excellent fit

Celeriac Planting Timeline โ€” Lee County, TX

Celeriac Planting Calendar

Activity When Date Range
Start Indoors January 24 Jan 24 โ€“ Feb 7
Transplant Outdoors February 28 Feb 28 โ€“ Mar 14
Direct Sow February 14 Feb 14 โ€“ Mar 7
Harvest June 13 Jun 13 โ€“ Jul 18
Fall Sowing September 21 Sep 21 โ€“ Oct 5

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

Month-by-Month Timeline

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

Growing Conditions

โ˜€๏ธ Sun

Full Sun (6-8+ hours)

๐Ÿ’ง Water

0.9"/week ยท Only during dry spells

๐Ÿ“… Days to Maturity

100โ€“120 days

๐Ÿงช Soil pH

Needs 6โ€“7 ยท Your soil: too_alkaline

๐Ÿ—บ๏ธ USDA Zone

Zone 8b

๐Ÿ“† Growing Season

275 days in Lee County

Growing Tips for Celeriac in Lee County

Direct sow Celeriac outdoors after February 28 in Lee County when soil has warmed and frost danger has passed.

With Lee County's clay soil (37% clay), work in 3-4 inches of compost before planting Celeriac. Avoid tilling when soil is wet to prevent compaction.

With summer highs reaching 97ยฐF in Lee County, provide afternoon shade for Celeriac and water deeply in the morning.

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

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 Lee County, TX?

Lee County is in Zone 8b with an average last frost of February 28. Plan your Celeriac planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is Lee County, TX?

Lee County, Texas is in USDA Hardiness Zone 8b. The average last spring frost is February 28 and first fall frost is November 30.

๐ŸŒฑ

Plan Your Garden with Confidence

Get our free Garden Planner โ€” designed to help Lee County gardeners in Zone 8b 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 Lee County, TX. Local conditions may vary. Last updated: April 2026.