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When to Plant Celery in Kenedy 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.

Kenedy County, Texas is in USDA Zone 9a. The average last spring frost is February 13 and the first fall frost is December 13, giving you a growing season of approximately 303 days.

At an elevation of 1,757 feet, Kenedy County receives approximately 58.7 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.

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

Kenedy County Soil Profile

Soil Type

Loam

Soil pH

6.6-7.5

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (181 days to spare)
Start indoors: Dec 21 Transplant: Jan 18 🍅 Harvest: Apr 12 – Jun 7
Recommended (50%) ✓ Fits season (163 days to spare)
Start indoors: Jan 16 Transplant: Feb 13 🍅 Harvest: May 8 – Jul 3
Safe Start (90%) ✓ Fits season (153 days to spare)
Start indoors: Feb 6 Transplant: Mar 6 🍅 Harvest: May 29 – Jul 24

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 Kenedy County

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

Soil pH

Your soil pH (6.6โ€“7.5) is more alkaline than Celery prefers (6.0โ€“7.0). Add sulfur or peat moss to lower pH.

Soil Texture

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

Organic Matter

Organic matter is moderate (2.2%). Annual compost additions will help Celery.

How to Plant Celery

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

Fall planting: Sow 8 weeks before your first frost date for a fall harvest.

Succession Planting Celery

4
successive plantings in your 303-day season

Sow every 9.1 weeks. Last sowing by Aug 15 to harvest before frost.

For a dedicated fall crop, sow by Oct 18.

Plant Water Budget

Plant needs
1.3″/week
Rainfall provides
0.8″/week
You supply
0.5″/week
Watering frequency 1-2 times/week
Season total 1,323 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€” 1.5" 0" โ„๏ธ Dormant
Feb 5.6" 2" 3.6" ๐Ÿšฟ Regular watering
Mar 5.6" 3.9" 1.7" ๐Ÿ’ง Light watering
Apr 5.6" 6" 0" โœ… Rainfall sufficient
May 5.6" 8.2" 0" โœ… Rainfall sufficient
Jun 5.6" 9.2" 0" โœ… Rainfall sufficient
Jul 5.6" 8" 0" โœ… Rainfall sufficient
Aug 5.6" 7.8" 0" โœ… Rainfall sufficient
Sep 5.6" 5.6" 0" โœ… Rainfall sufficient
Oct 5.6" 3.2" 2.4" ๐Ÿ’ง Light watering
Nov 5.6" 1.9" 3.7" ๐Ÿšฟ Regular watering
Dec 5.6" 1.4" 4.2" ๐Ÿšฟ Regular watering

Water needs are for active growing months only (Febโ€“Dec in Kenedy 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 ~2,575 GDD — county provides 7,828 GDD Excellent fit

Celery Planting Timeline โ€” Kenedy 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
Harvest May 8 May 8 โ€“ Jul 3
Fall Sowing October 18 Oct 18 โ€“ Nov 1

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 Fall Sowing
December โ€”

Growing Conditions

โ˜€๏ธ Sun

Full Sun (6-8+ hours)

๐Ÿ’ง Water

1.3"/week ยท 1-2 times/week

๐Ÿ“… Days to Maturity

80โ€“120 days

๐Ÿงช Soil pH

Needs 6โ€“7 ยท Your soil: too_alkaline

๐Ÿ—บ๏ธ USDA Zone

Zone 9a

๐Ÿ“† Growing Season

303 days in Kenedy County

Growing Tips for Celery in Kenedy County

Direct sow Celery outdoors after February 13 in Kenedy County when soil has warmed and frost danger has passed.

With summer highs reaching 101ยฐF in Kenedy County, provide afternoon shade for Celery and water deeply in the morning.

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 Kenedy County, TX?

Kenedy 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 Kenedy County, TX?

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

๐ŸŒฑ

Plan Your Garden with Confidence

Get our free Garden Planner โ€” designed to help Kenedy 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 Kenedy County, TX. Local conditions may vary. Last updated: April 2026.