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When to Plant Celery in Jim Wells 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.

Jim Wells County, Texas is in USDA Zone 9a. The average last spring frost is February 13 and the first fall frost is December 9, giving you a growing season of approximately 299 days.

At an elevation of 4,949 feet, Jim Wells County receives approximately 65.4 inches of rainfall annually with predominantly loam soil. Summer highs average 101ยฐF, so Celery may need afternoon shade and extra watering during peak heat. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Celery root diseases.

Jim Wells County, TX (Zone 9a) Year-round
299 days
Last Spring Frost February 13
299 growing days
First Fall Frost December 9

Jim Wells County Soil Profile

Soil Type

Loam

Soil pH

6.7-7.3

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (174 days to spare)
Start indoors: Dec 23 Transplant: Jan 20 🍅 Harvest: Apr 14 – Jun 9
Recommended (50%) ✓ Fits season (159 days to spare)
Start indoors: Jan 16 Transplant: Feb 13 🍅 Harvest: May 8 – Jul 3
Safe Start (90%) ✓ Fits season (147 days to spare)
Start indoors: Feb 8 Transplant: Mar 8 🍅 Harvest: May 31 – Jul 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.

Plant Water Budget

Plant needs
1.5″/week
Rainfall provides
0.9″/week
You supply
0.7″/week
Watering frequency 2-3 times/week
Season total 1,872 gal / 100 sq ft
Drought risk

Water stress score is 6/10 โ€” consider drought-tolerant varieties and mulching

Celery needs ~2,575 GDD — county provides 7,725 GDD Excellent fit

Celery Planting Timeline โ€” Jim Wells County, TX

Celery Planting Calendar

Activity When Date Range
Start Indoors January 16 Jan 16 โ€“ Jan 30
Transplant Outdoors February 13 Feb 13 โ€“ Feb 27
Direct Sow January 23 Jan 23 โ€“ Feb 13
Fall Sowing October 14 Oct 14 โ€“ Oct 28
Harvest May 8 May 8 โ€“ Jul 3

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

Month-by-Month Timeline

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

Growing Conditions

Sun

Full Sun (6-8+ hours)

Water

High โ€” keep soil consistently moist

Days to Maturity

80โ€“120 days

Soil pH

6 โ€“ 7

USDA Zone

Zone 9a

Growing Season

299 days

Growing Tips for Jim Wells County

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

Level Up Your Garden

Frequently Asked Questions

When should I plant Celery in Jim Wells County, TX?

Jim Wells County is in Zone 9a with an average last frost of February 13. Plan your Celery planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is Jim Wells County, TX?

Jim Wells County, Texas is in USDA Hardiness Zone 9a. The average last spring frost is February 13 and first fall frost is December 9.

๐ŸŒฑ

Plan Your Garden with Confidence

Get our free Garden Planner โ€” designed to help Jim Wells County gardeners in Zone 9a 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 Jim Wells County, TX. Local conditions may vary. Last updated: April 2026.