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When to Plant Celery in Leesville, OH

Celery
Carroll County, Ohio Zone 6b July

This month in Carroll County, Ohio

Each item below is timed to Carroll County, Ohio's frost dates and soil temperatures. Skip nothing, stress about nothing.

Avg. last frost April 30
Avg. first frost October 15
Soil temp (4") 77°F
Watering Low
Pest pressure High
Daylight 14.6 hrs
  1. Pick celery

    This is the payoff month. Bring a basket, bring a friend, and get into the beds.

Coming up in August — start thinking about
  • First harvests: celery
  • Fall sowing: 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.

Leesville, Ohio is in USDA Zone 6b. The average last spring frost is April 30 and the first fall frost is October 15, giving you a growing season of approximately 168 days.

At an elevation of 1,145 feet, Carroll County receives approximately 35 inches of rainfall annually with predominantly silt loam soil. Summer highs average 85°F, providing good warmth for Celery during the growing season.

Leesville, OH (Zone 6b) Moderate season
168 days
Last Spring Frost April 30
168 growing days
First Fall Frost October 15

Leesville Soil Profile

Soil Type

Silt Loam

Soil pH

5.9-6.9

Drainage

Well Drained

Celery Planting Risk Windows

Early Start (70% safe) ✓ Fits season (25 days to spare)
Start indoors: Mar 22 Transplant: Apr 26 🍅 Harvest: Jul 19 – Sep 13
Recommended (50%) ✓ Fits season (28 days to spare)
Start indoors: Mar 26 Transplant: Apr 30 🍅 Harvest: Jul 23 – Sep 17
Safe Start (90%) ✓ Fits season (25 days to spare)
Start indoors: Apr 17 Transplant: May 22 🍅 Harvest: Aug 14 – Oct 9

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 Leesville

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

Soil pH

Your soil pH (5.9–6.9) overlaps with Celery's range (6.0–7.0), though not a perfect match.

Soil Texture

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

Organic Matter

Organic matter is excellent (4.0%) — Celery will thrive.

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

2
successive plantings in your 168-day season

Sow every 9.1 weeks. Last sowing by Jun 17 to harvest before frost.

For a dedicated fall crop, sow by Aug 06.

Celery Water Budget

Plant needs
1.3″/week
Rainfall provides
0.9″/week
You supply
0.4″/week
Watering frequency 1-2 times/week
Season total 635 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 1.3" 0" ❄️ Dormant
Feb 1.7" 0" ❄️ Dormant
Mar 2.7" 0" ❄️ Dormant
Apr 5.6" 3.6" 2" 💧 Light watering
May 5.6" 4.5" 1.1" 💧 Light watering
Jun 5.6" 4.2" 1.4" 💧 Light watering
Jul 5.6" 4" 1.6" 💧 Light watering
Aug 5.6" 3.4" 2.2" 💧 Light watering
Sep 5.6" 2.6" 3" 🚿 Regular watering
Oct 5.6" 2.3" 3.3" 🚿 Regular watering
Nov 2.7" 0" ❄️ Dormant
Dec 2" 0" ❄️ Dormant

Water needs are for active growing months only (Apr–Oct in Carroll 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 ~1,375 GDD — county provides 2,310 GDD Excellent fit

Celery Planting Timeline — Leesville, OH

Celery Planting Calendar

Activity When Date Range
Start Indoors March 26 Mar 26 – Apr 9
Transplant Outdoors April 30 Apr 30 – May 14
Direct Sow April 16 Apr 16 – May 7
Harvest July 23 Jul 23 – Sep 17
Fall Sowing August 6 Aug 6 – Aug 20

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

Month-by-Month Timeline

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

Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

1.3"/week · 1-2 times/week

📅 Days to Maturity

80–120 days

🧪 Soil pH

Needs 6–7 · Your soil: acceptable

🗺️ USDA Zone

Zone 6b

📆 Growing Season

168 days in Carroll County

Growing Tips for Celery in Leesville

Direct sow Celery outdoors after April 30 in Carroll 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 →

🌱

Your Carroll County Garden Planner — Free

A 22-page printable planner built for Carroll County (Zone 6b). 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 Carroll County, OH. Local conditions may vary. Last updated: July 2026.