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When to Plant Celeriac in Montgomery County, MS

Montgomery County, Mississippi Zone 7b April

April in the garden — Montgomery County, Mississippi

Your Montgomery County, Mississippi garden is entering a new phase. Here's what's on the schedule for April and why each task matters now.

Avg. last frost March 24
Avg. first frost November 7
Soil temp (4") 57°F
Watering Low
Pest pressure Moderate
Daylight 12.8 hrs
  1. Start celeriac indoors

    You're about 27 weeks out from your last frost — the perfect window to get these germinating indoors.

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Celeriac is a celery relative grown for its knobby, flavorful root rather than its stalks. It has a rich celery flavor and is excellent roasted, mashed, or in soups.

Montgomery County, Mississippi is in USDA Zone 7b. The average last spring frost is March 24 and the first fall frost is November 7, giving you a growing season of approximately 228 days.

At an elevation of 497 feet, Montgomery County receives approximately 54 inches of rainfall annually with predominantly clay loam soil. Summer highs average 94°F, providing good warmth for Celeriac during the growing season. Clay soil retains moisture well for Celeriac, but amend with compost to improve drainage and prevent root rot. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Celeriac root diseases.

Montgomery County, MS (Zone 7b) Long season
228 days
Last Spring Frost March 24
228 growing days
First Fall Frost November 7

Montgomery County Soil Profile

Soil Type

Clay Loam

Soil pH

5.3-6.3

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (93 days to spare)
Start indoors: Feb 5 Transplant: Mar 12 🍅 Harvest: Jun 25 – Jul 30
Recommended (50%) ✓ Fits season (88 days to spare)
Start indoors: Feb 17 Transplant: Mar 24 🍅 Harvest: Jul 7 – Aug 11
Safe Start (90%) ✓ Fits season (85 days to spare)
Start indoors: Mar 11 Transplant: Apr 15 🍅 Harvest: Jul 29 – Sep 2

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 Montgomery County

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

Soil pH

Your soil pH (5.3–6.3) is more acidic than Celeriac prefers (6.0–7.0). Add garden lime to raise pH.

Soil Texture

Your soil has 34% clay, which can cause forked or stunted roots for Celeriac. Use raised beds with loose, sandy mix for best results.

Organic Matter

Organic matter is moderate (2.4%). Annual compost additions will help Celeriac.

How to Plant Celeriac

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

Fall planting: Sow 10 weeks before your first frost date for a fall harvest.

Plant Water Budget

Plant needs
0.9″/week
Rainfall provides
1.0″/week
Watering frequency Natural rainfall sufficient
Season total 0 gal / 100 sq ft

Monthly Watering Guide for Celeriac

Celeriac needs approximately 0.9 inches of water per week (3.9" per month). Here's how your county's rainfall compares month by month.

Month Celeriac Needs Rainfall You Supplement Action
Jan 4" 0" ❄️ Dormant
Feb 4.7" 0" ❄️ Dormant
Mar 3.9" 5.2" 0" ✅ Rainfall sufficient
Apr 3.9" 3.8" 0.1" 💧 Light watering
May 3.9" 4.4" 0" ✅ Rainfall sufficient
Jun 3.9" 4.9" 0" ✅ Rainfall sufficient
Jul 3.9" 6.1" 0" ✅ Rainfall sufficient
Aug 3.9" 5.7" 0" ✅ Rainfall sufficient
Sep 3.9" 3.6" 0.3" 💧 Light watering
Oct 3.9" 3.7" 0.2" 💧 Light watering
Nov 3.9" 3.9" 0" ✅ Rainfall sufficient
Dec 4" 0" ❄️ Dormant

Water needs are for active growing months only (Mar–Nov in Montgomery County). Supplement amounts are based on average rainfall — actual needs vary with temperature, soil, and mulching.

Celeriac 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.

Celeriac needs ~2,255 GDD — county provides 4,674 GDD Excellent fit

Celeriac Planting Timeline — Montgomery County, MS

Celeriac Planting Calendar

Activity When Date Range
Start Indoors February 17 Feb 17 – Mar 3
Transplant Outdoors March 24 Mar 24 – Apr 7
Direct Sow March 10 Mar 10 – Mar 31
Harvest July 7 Jul 7 – Aug 11
Fall Sowing August 29 Aug 29 – Sep 12

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

Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

0.9"/week · Natural rainfall sufficient

📅 Days to Maturity

100–120 days

🧪 Soil pH

Needs 6–7 · Your soil: too_acidic

🗺️ USDA Zone

Zone 7b

📆 Growing Season

228 days in Montgomery County

Growing Tips for Celeriac in Montgomery County

Direct sow Celeriac outdoors after March 24 in Montgomery County when soil has warmed and frost danger has passed.

With Montgomery County's clay soil (34% clay), work in 3-4 inches of compost before planting Celeriac. Avoid tilling when soil is wet to prevent compaction.

Common pests for Celeriac 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. Remove side roots as they develop to encourage a single large bulb. Harvest after a light frost for best 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 Celeriac in Montgomery County, MS?

Montgomery County is in Zone 7b with an average last frost of March 24. Plan your Celeriac planting based on this frost date — see the calendar above for exact timing.

What planting zone is Montgomery County, MS?

Montgomery County, Mississippi is in USDA Hardiness Zone 7b. The average last spring frost is March 24 and first fall frost is November 7.

🌱

Your Montgomery County Garden Planner — Free

A 24-page printable planner built for Montgomery County (Zone 7b). 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 Montgomery County, MS. Local conditions may vary. Last updated: April 2026.

Sources & credits

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