Blog

When to plant Celeriac in Grenada County, MS

Grenada County gardeners should plant Celeriac between March 16 and April 6 in spring. With Grenada County's Zone 8a climate (last frost March 30), Celeriac needs 100–120 days to mature — plant by July 3 for a full harvest. A second sowing from August 22 to September 5 extends the harvest into fall.

When to Plant Celeriac in Grenada County, MS

Grenada County, Mississippi Zone 8a June

Your June game plan for Grenada County, Mississippi

June rewards gardeners who work with the weather, not against it. Here's how to stay in step this month in Grenada County, Mississippi.

Avg. last frost March 30
Avg. first frost October 31
Soil temp (4") 78°F
Watering Low
Pest pressure High
Daylight 14.2 hrs
To set up a strong July, finish these tasks
  • First harvests: celeriac

Instant PDF download. No spam, unsubscribe any time.

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.

Grenada County, Mississippi is in USDA Zone 8a. The average last spring frost is March 30 and the first fall frost is October 31, giving you a growing season of approximately 215 days.

At an elevation of 101 feet, Grenada County receives approximately 49.2 inches of rainfall annually with predominantly clay loam soil. Summer highs average 90°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.

Grenada County, MS (Zone 8a) Long season
215 days
Last Spring Frost March 30
215 growing days
First Fall Frost October 31

Grenada County Soil Profile

Soil Type

Clay Loam

Soil pH

5.6-6.4

Drainage

Well Drained

Celeriac Planting Risk Windows

Early Start (70% safe) ✓ Fits season (79 days to spare)
Start indoors: Feb 15 Transplant: Mar 22 🍅 Harvest: Jul 5 – Aug 9
Recommended (50%) ✓ Fits season (75 days to spare)
Start indoors: Feb 23 Transplant: Mar 30 🍅 Harvest: Jul 13 – Aug 17
Safe Start (90%) ✓ Fits season (81 days to spare)
Start indoors: Mar 12 Transplant: Apr 16 🍅 Harvest: Jul 30 – 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 Grenada County

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

Soil pH

Your soil pH (5.6–6.4) overlaps with Celeriac's range (6.0–7.0), though not a perfect match.

Soil Texture

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

Organic Matter

Organic matter is moderate (2.5%). 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.

Celeriac 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 4.5" 0" ❄️ Dormant
Feb 3.9" 0" ❄️ Dormant
Mar 3.9" 4.4" 0" ✅ Rainfall sufficient
Apr 3.9" 3.7" 0.2" 💧 Light watering
May 3.9" 3.8" 0.1" 💧 Light watering
Jun 3.9" 4.3" 0" ✅ Rainfall sufficient
Jul 3.9" 5.7" 0" ✅ Rainfall sufficient
Aug 3.9" 4.8" 0" ✅ Rainfall sufficient
Sep 3.9" 3.5" 0.4" 💧 Light watering
Oct 3.9" 3.3" 0.6" 💧 Light watering
Nov 3.8" 0" ❄️ Dormant
Dec 3.5" 0" ❄️ Dormant

Water needs are for active growing months only (Mar–Oct in Grenada 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 ~1,925 GDD — county provides 3,762 GDD Excellent fit

Celeriac Planting Timeline — Grenada County, MS

Celeriac Planting Calendar

Activity When Date Range
Start Indoors February 23 Feb 23 – Mar 9
Transplant Outdoors March 30 Mar 30 – Apr 13
Direct Sow March 16 Mar 16 – Apr 6
Harvest July 13 Jul 13 – Aug 17
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
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: acceptable

🗺️ USDA Zone

Zone 8a

📆 Growing Season

215 days in Grenada County

Growing Tips for Celeriac in Grenada County

Direct sow Celeriac outdoors after March 30 in Grenada County when soil has warmed and frost danger has passed.

With Grenada County's clay soil (28% 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 Grenada County, MS?

Grenada County is in Zone 8a with an average last frost of March 30. Plan your Celeriac planting based on this frost date — see the calendar above for exact timing.

What planting zone is Grenada County, MS?

Grenada County, Mississippi is in USDA Hardiness Zone 8a. The average last spring frost is March 30 and first fall frost is October 31.

When should I plant Celeriac in Grenada County, MS?

In Grenada County, MS, plant Celeriac after the last frost (around March 30) and before the first frost (around October 31). Best results when soil holds above 50°F.

What growing zone is Grenada County, MS for Celeriac?

Grenada County sits in USDA Zone 8a. Celeriac grows reliably in zones 3a through 9b, so it's a good fit here.

Can Celeriac grow in Grenada County's climate?

Yes — Celeriac grows well in Grenada County's temperate climate. Grenada County averages a 215-day frost-free season, with last frost around March 30 and first frost around October 31.

🌱

Your Grenada County Garden Planner — Free

A 22-page printable planner built for Grenada 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.

Instant PDF download. No spam, unsubscribe any time.

Data sources: USDA Plant Hardiness Zone Map (2023), NOAA 30-Year Climate Normals. Frost dates are based on 50% probability averages for Grenada County, MS. Local conditions may vary. Last updated: June 2026.

Sources & credits

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