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When to Plant Celeriac in Ector County, TX

Ector County, Texas Zone 8b May

Your May gardening checklist

Welcome to May in Zone 8b. These are the moves that will have the biggest impact on your growing season.

Avg. last frost March 23
Avg. first frost November 11
Soil temp (4") 58°F
Watering Critical
Pest pressure Moderate
Daylight 13.6 hrs

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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.

Ector County, Texas is in USDA Zone 8b. The average last spring frost is March 23 and the first fall frost is November 11, giving you a growing season of approximately 233 days.

At an elevation of 3,652 feet, Ector County receives approximately 44 inches of rainfall annually with predominantly sandy loam soil. Summer highs average 93°F, providing good warmth for Celeriac during the growing season. Sandy soil warms quickly in spring — great for early planting — but Celeriac will need more frequent watering and organic matter to retain nutrients.

Ector County, TX (Zone 8b) Long season
233 days
Last Spring Frost March 23
233 growing days
First Fall Frost November 11

Ector County Soil Profile

Soil Type

Sandy Loam

Soil pH

7.5-8.5

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (94 days to spare)
Start indoors: Feb 6 Transplant: Mar 13 🍅 Harvest: Jun 26 – Jul 31
Recommended (50%) ✓ Fits season (93 days to spare)
Start indoors: Feb 16 Transplant: Mar 23 🍅 Harvest: Jul 6 – Aug 10
Safe Start (90%) ✓ Fits season (83 days to spare)
Start indoors: Mar 14 Transplant: Apr 18 🍅 Harvest: Aug 1 – Sep 5

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 Ector County

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

Soil pH

Your soil pH (7.5–8.5) is more alkaline than Celeriac prefers (6.0–7.0). Add sulfur or peat moss to lower pH.

Soil Texture

Sandy soil in Ector County warms quickly in spring but drains fast. Celeriac will need more frequent watering and regular compost additions to retain nutrients.

Organic Matter

Organic matter is low (0.9%). Add 2-3 inches of compost before planting 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
0.8″/week
You supply
0.1″/week
Watering frequency Only during dry spells
Season total 266 gal / 100 sq ft
Drought risk

Water stress score is 8/10 — 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 3" 0" ❄️ Dormant
Feb 2.3" 0" ❄️ Dormant
Mar 3.9" 2.4" 1.5" 💧 Light watering
Apr 3.9" 1.7" 2.2" 🚿 Regular watering
May 3.9" 0.9" 3" 🚿 Regular watering
Jun 3.9" 1.6" 2.3" 🚿 Regular watering
Jul 3.9" 8.3" 0" ✅ Rainfall sufficient
Aug 3.9" 9.7" 0" ✅ Rainfall sufficient
Sep 3.9" 5.7" 0" ✅ Rainfall sufficient
Oct 3.9" 3.5" 0.4" 💧 Light watering
Nov 3.9" 2.3" 1.6" 💧 Light watering
Dec 2.6" 0" ❄️ Dormant

Water needs are for active growing months only (Mar–Nov in Ector County). Supplement amounts are based on average rainfall — 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" — every day above 50°F 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 ~2,172 GDD — county provides 4,601 GDD Excellent fit

Celeriac Planting Timeline — Ector County, TX

Celeriac Planting Calendar

Activity When Date Range
Start Indoors February 16 Feb 16 – Mar 2
Transplant Outdoors March 23 Mar 23 – Apr 6
Direct Sow March 9 Mar 9 – Mar 30
Harvest July 6 Jul 6 – Aug 10
Fall Sowing September 2 Sep 2 – Sep 16

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

Month-by-Month Timeline

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

Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

0.9"/week · Only during dry spells

📅 Days to Maturity

100–120 days

🧪 Soil pH

Needs 6–7 · Your soil: too_alkaline

🗺️ USDA Zone

Zone 8b

📆 Growing Season

233 days in Ector County

Growing Tips for Celeriac in Ector County

Direct sow Celeriac outdoors after March 23 in Ector County when soil has warmed and frost danger has passed.

Sandy soil in Ector County dries quickly — mulch Celeriac with 2-3 inches of straw and water deeply 2-3 times per week rather than lightly every day.

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 Ector County, TX?

Ector County is in Zone 8b with an average last frost of March 23. Plan your Celeriac planting based on this frost date — see the calendar above for exact timing.

What planting zone is Ector County, TX?

Ector County, Texas is in USDA Hardiness Zone 8b. The average last spring frost is March 23 and first fall frost is November 11.

🌱

Your Ector County Garden Planner — Free

A 24-page printable planner built for Ector County (Zone 8b). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.

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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 Ector County, TX. Local conditions may vary. Last updated: May 2026.

Sources & credits

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