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When to Plant Celery in Coleman County, TX

Celery is a marshland plant that requires consistent moisture and cool temperatures to produce crisp, flavorful stalks. It is a rewarding but demanding garden crop.

Coleman County, Texas is in USDA Zone 7b. The average last spring frost is March 17 and the first fall frost is November 16, giving you a growing season of approximately 244 days.

At an elevation of 1,129 feet, Coleman County receives approximately 59.4 inches of rainfall annually with predominantly loam soil. Summer highs average 90ยฐF, providing good warmth for Celery during the growing season. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Celery root diseases.

Coleman County, TX (Zone 7b) Long season
244 days
Last Spring Frost March 17
244 growing days
First Fall Frost November 16

Coleman County Soil Profile

Soil Type

Loam

Soil pH

6.3-7.7

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (108 days to spare)
Start indoors: Feb 1 Transplant: Mar 8 🍅 Harvest: May 31 – Jul 26
Recommended (50%) ✓ Fits season (104 days to spare)
Start indoors: Feb 10 Transplant: Mar 17 🍅 Harvest: Jun 9 – Aug 4
Safe Start (90%) ✓ Fits season (101 days to spare)
Start indoors: Mar 4 Transplant: Apr 8 🍅 Harvest: Jul 1 – Aug 26

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 Coleman County

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

Soil pH

Your soil pH (6.3โ€“7.7) overlaps with Celery's range (6.0โ€“7.0), though not a perfect match.

Soil Texture

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

Organic Matter

Organic matter is moderate (2.4%). Annual compost additions will help Celery.

How to Plant Celery

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

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

Succession Planting Celery

3
successive plantings in your 244-day season

Sow every 9.1 weeks. Last sowing by Jul 19 to harvest before frost.

For a dedicated fall crop, sow by Sep 07.

Plant Water Budget

Plant needs
1.3″/week
Rainfall provides
1.0″/week
You supply
0.3″/week
Watering frequency Only during dry spells
Season total 603 gal / 100 sq ft

Monthly Watering Guide for Celery

Celery needs approximately 1.3 inches of water per week (5.6" per month). Here's how your county's rainfall compares month by month.

Month Celery Needs Rainfall You Supplement Action
Jan โ€” 1.4" 0" โ„๏ธ Dormant
Feb โ€” 2.2" 0" โ„๏ธ Dormant
Mar 5.6" 4.3" 1.3" ๐Ÿ’ง Light watering
Apr 5.6" 6.4" 0" โœ… Rainfall sufficient
May 5.6" 7.8" 0" โœ… Rainfall sufficient
Jun 5.6" 9.7" 0" โœ… Rainfall sufficient
Jul 5.6" 7.7" 0" โœ… Rainfall sufficient
Aug 5.6" 7.7" 0" โœ… Rainfall sufficient
Sep 5.6" 5.1" 0.5" ๐Ÿ’ง Light watering
Oct 5.6" 3.3" 2.3" ๐Ÿ’ง Light watering
Nov 5.6" 2" 3.6" ๐Ÿšฟ Regular watering
Dec โ€” 1.7" 0" โ„๏ธ Dormant

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

Celery 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.

Celery needs ~1,750 GDD — county provides 4,270 GDD Excellent fit

Celery Planting Timeline โ€” Coleman County, TX

Celery Planting Calendar

Activity When Date Range
Start Indoors February 10 Feb 10 โ€“ Feb 24
Transplant Outdoors March 17 Mar 17 โ€“ Mar 31
Direct Sow March 3 Mar 3 โ€“ Mar 24
Harvest June 9 Jun 9 โ€“ Aug 4
Fall Sowing September 7 Sep 7 โ€“ Sep 21

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

Month-by-Month Timeline

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

Growing Conditions

โ˜€๏ธ Sun

Full Sun (6-8+ hours)

๐Ÿ’ง Water

1.3"/week ยท Only during dry spells

๐Ÿ“… Days to Maturity

80โ€“120 days

๐Ÿงช Soil pH

Needs 6โ€“7 ยท Your soil: acceptable

๐Ÿ—บ๏ธ USDA Zone

Zone 7b

๐Ÿ“† Growing Season

244 days in Coleman County

Growing Tips for Celery in Coleman County

Direct sow Celery outdoors after March 17 in Coleman County when soil has warmed and frost danger has passed.

Common pests for Celery 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. Keep soil consistently moist and never let it dry out. Blanch stalks by mounding soil or using collars for milder 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 Celery in Coleman County, TX?

Coleman County is in Zone 7b with an average last frost of March 17. Plan your Celery planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is Coleman County, TX?

Coleman County, Texas is in USDA Hardiness Zone 7b. The average last spring frost is March 17 and first fall frost is November 16.

๐ŸŒฑ

Plan Your Garden with Confidence

Get our free Garden Planner โ€” designed to help Coleman County gardeners in Zone 7b organize planting dates, track what's growing, and never miss a planting window.

Get Your Free Garden Planner →

Free download. Plan your entire garden season in minutes.

Data sources: USDA Plant Hardiness Zone Map (2023), NOAA 30-Year Climate Normals. Frost dates are based on 50% probability averages for Coleman County, TX. Local conditions may vary. Last updated: April 2026.