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When to Plant Celery in Calhoun County, MS

Calhoun County, Mississippi Zone 8a May

Your May planting checklist for Calhoun County, Mississippi

We've pulled the most time-sensitive tasks for Calhoun County, Mississippi this May and put them front and centre. Tackle them in order.

Avg. last frost March 27
Avg. first frost October 31
Soil temp (4") 69°F
Watering Low
Pest pressure Moderate
Daylight 13.8 hrs
  1. Indoor seed-starting week for celery

    Starting these indoors now means sturdy transplants ready the moment your soil warms up.

June will be here before you know it — start on
  • First harvests: celery

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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.

Calhoun County, Mississippi is in USDA Zone 8a. The average last spring frost is March 27 and the first fall frost is October 31, giving you a growing season of approximately 218 days.

At an elevation of 470 feet, Calhoun County receives approximately 57.5 inches of rainfall annually with predominantly clay loam soil. Summer highs average 90°F, 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.

Calhoun County, MS (Zone 8a) Long season
218 days
Last Spring Frost March 27
218 growing days
First Fall Frost October 31

Calhoun County Soil Profile

Soil Type

Clay Loam

Soil pH

5.3-6.6

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (85 days to spare)
Start indoors: Feb 9 Transplant: Mar 16 🍅 Harvest: Jun 8 – Aug 3
Recommended (50%) ✓ Fits season (78 days to spare)
Start indoors: Feb 20 Transplant: Mar 27 🍅 Harvest: Jun 19 – Aug 14
Safe Start (90%) ✓ Fits season (81 days to spare)
Start indoors: Mar 12 Transplant: Apr 16 🍅 Harvest: Jul 9 – Sep 3

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 Calhoun County

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

Soil pH

Your soil pH (5.3–6.6) is more acidic than Celery prefers (6.0–7.0). Add garden lime to raise pH.

Soil Texture

The clay loam soil in Calhoun County is excellent for Celery — good drainage, moisture retention, and nutrient holding capacity.

Organic Matter

Organic matter is moderate (2.6%). 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 218-day season

Sow every 9.1 weeks. Last sowing by Jul 03 to harvest before frost.

For a dedicated fall crop, sow by Aug 22.

Plant Water Budget

Plant needs
1.3″/week
Rainfall provides
1.1″/week
You supply
0.2″/week
Watering frequency Only during dry spells
Season total 373 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 4.5" 0" ❄️ Dormant
Feb 4.7" 0" ❄️ Dormant
Mar 5.6" 5.1" 0.5" 💧 Light watering
Apr 5.6" 4.1" 1.5" 💧 Light watering
May 5.6" 5" 0.6" 💧 Light watering
Jun 5.6" 4.7" 0.9" 💧 Light watering
Jul 5.6" 6.1" 0" ✅ Rainfall sufficient
Aug 5.6" 5.8" 0" ✅ Rainfall sufficient
Sep 5.6" 4.4" 1.2" 💧 Light watering
Oct 5.6" 3.9" 1.7" 💧 Light watering
Nov 3.9" 0" ❄️ Dormant
Dec 5.3" 0" ❄️ Dormant

Water needs are for active growing months only (Mar–Oct in Calhoun County). Supplement amounts are based on average rainfall — 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" — 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.

Celery needs ~1,750 GDD — county provides 3,815 GDD Excellent fit

Celery Planting Timeline — Calhoun County, MS

Celery Planting Calendar

Activity When Date Range
Start Indoors February 20 Feb 20 – Mar 6
Transplant Outdoors March 27 Mar 27 – Apr 10
Direct Sow March 13 Mar 13 – Apr 3
Harvest June 19 Jun 19 – Aug 14
Fall Sowing August 22 Aug 22 – Sep 5

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 Direct Sow
May
June Harvest
July Harvest
August Fall Sowing Harvest
September Fall Sowing
October
November
December

Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

1.3"/week · Only during dry spells

📅 Days to Maturity

80–120 days

🧪 Soil pH

Needs 6–7 · Your soil: too_acidic

🗺️ USDA Zone

Zone 8a

📆 Growing Season

218 days in Calhoun County

Growing Tips for Celery in Calhoun County

Direct sow Celery outdoors after March 27 in Calhoun County when soil has warmed and frost danger has passed.

With Calhoun County's clay soil (30% clay), work in 3-4 inches of compost before planting Celery. Avoid tilling when soil is wet to prevent compaction.

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 Calhoun County, MS?

Calhoun County is in Zone 8a with an average last frost of March 27. Plan your Celery planting based on this frost date — see the calendar above for exact timing.

What planting zone is Calhoun County, MS?

Calhoun County, Mississippi is in USDA Hardiness Zone 8a. The average last spring frost is March 27 and first fall frost is October 31.

🌱

Your Calhoun County Garden Planner — Free

A 24-page printable planner built for Calhoun County (Zone 8a). 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 Calhoun County, MS. Local conditions may vary. Last updated: May 2026.

Sources & credits

Every number on this page traces back to a primary horticulture or government data source. Click through to verify.