Blog

When to Plant Celery in Marshall County, AL

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.

Marshall County, Alabama is in USDA Zone 7a. The average last spring frost is April 5 and the first fall frost is October 31, giving you a growing season of approximately 209 days.

At an elevation of 159 feet, Marshall County receives approximately 60.2 inches of rainfall annually with predominantly clay loam soil. Summer highs average 89ยฐF, providing good warmth for Celery during the growing season. Clay soil retains moisture well for Celery, but amend with compost to improve drainage and prevent root rot. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Celery root diseases.

Marshall County, AL (Zone 7a) Long season
209 days
Last Spring Frost April 5
209 growing days
First Fall Frost October 31

Marshall County Soil Profile

Soil Type

Clay Loam

Soil pH

5.5-6.6

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (70 days to spare)
Start indoors: Feb 20 Transplant: Mar 27 🍅 Harvest: Jun 19 – Aug 14
Recommended (50%) ✓ Fits season (69 days to spare)
Start indoors: Mar 1 Transplant: Apr 5 🍅 Harvest: Jun 28 – Aug 23
Safe Start (90%) ✓ Fits season (69 days to spare)
Start indoors: Mar 14 Transplant: Apr 18 🍅 Harvest: Jul 11 – 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.

Plant Water Budget

Plant needs
1.5″/week
Rainfall provides
1.2″/week
You supply
0.3″/week
Watering frequency Only during dry spells
Season total 540 gal / 100 sq ft
Celery needs ~1,675 GDD — county provides 3,500 GDD Excellent fit

Celery Planting Timeline โ€” Marshall County, AL

Celery Planting Calendar

Activity When Date Range
Start Indoors March 1 Mar 1 โ€“ Mar 15
Transplant Outdoors April 5 Apr 5 โ€“ Apr 19
Direct Sow March 22 Mar 22 โ€“ Apr 12
Fall Sowing August 22 Aug 22 โ€“ Sep 5
Harvest June 28 Jun 28 โ€“ Aug 23

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

Month-by-Month Timeline

MonthActivities
January โ€”
February โ€”
March Start Indoors Direct Sow
April Transplant Outdoors Direct Sow
May โ€”
June Harvest
July Harvest
August Fall Sowing Harvest
September Fall Sowing
October โ€”
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 7a

Growing Season

209 days

Growing Tips for Marshall 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 Marshall County, AL?

Marshall County is in Zone 7a with an average last frost of April 5. Plan your Celery planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is Marshall County, AL?

Marshall County, Alabama is in USDA Hardiness Zone 7a. The average last spring frost is April 5 and first fall frost is October 31.

๐ŸŒฑ

Plan Your Garden with Confidence

Get our free Garden Planner โ€” designed to help Marshall County gardeners in Zone 7a 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 Marshall County, AL. Local conditions may vary. Last updated: April 2026.