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When to plant Celeriac in Chilton County, AL

Celeriac planted in Chilton County between February 28 and March 21 matures in 100–120 days — well before the November 14 first frost. A second sowing from September 5 to September 19 extends the harvest into fall.

When to Plant Celeriac in Chilton County, AL

Chilton County, Alabama Zone 8b July

Chilton County, Alabama gardeners: here's your July plan

Here's what deserves your attention in Chilton County, Alabama this month. Everything below is tailored to Zone 8b and timed around your local frost dates.

Avg. last frost March 14
Avg. first frost November 14
Soil temp (4") 86°F
Watering Low
Pest pressure High
Daylight 14 hrs
  1. Harvest celeriac as they ripen

    Check every 1–2 days. Many of these get tough or go to seed if you wait too long.

Coming up in August — start thinking about
  • First harvests: celeriac

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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.

Chilton County, Alabama is in USDA Zone 8b. The average last spring frost is March 14 and the first fall frost is November 14, giving you a growing season of approximately 245 days.

At an elevation of 310 feet, Chilton County receives approximately 50.5 inches of rainfall annually with predominantly clay loam soil. Summer highs average 89°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.

Chilton County, AL (Zone 8b) Long season
245 days
Last Spring Frost March 14
245 growing days
First Fall Frost November 14

Chilton County Soil Profile

Soil Type

Clay Loam

Soil pH

5.5-6.6

Drainage

Well Drained

Celeriac Planting Risk Windows

Early Start (70% safe) ✓ Fits season (104 days to spare)
Start indoors: Jan 31 Transplant: Mar 7 🍅 Harvest: Jun 20 – Jul 25
Recommended (50%) ✓ Fits season (105 days to spare)
Start indoors: Feb 7 Transplant: Mar 14 🍅 Harvest: Jun 27 – Aug 1
Safe Start (90%) ✓ Fits season (101 days to spare)
Start indoors: Feb 27 Transplant: Apr 3 🍅 Harvest: Jul 17 – Aug 21

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 Chilton County

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

Soil pH

Your soil pH (5.5–6.6) overlaps with Celeriac's range (6.0–7.0), though not a perfect match.

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 (2.8%). 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
0.9″/week
You supply
0.0″/week
Watering frequency Only during dry spells
Season total 75 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 4.5" 0" ❄️ Dormant
Mar 3.9" 5.4" 0" ✅ Rainfall sufficient
Apr 3.9" 4.1" 0" ✅ Rainfall sufficient
May 3.9" 3.8" 0.1" 💧 Light watering
Jun 3.9" 3.9" 0" ✅ Rainfall sufficient
Jul 3.9" 5.1" 0" ✅ Rainfall sufficient
Aug 3.9" 5.2" 0" ✅ Rainfall sufficient
Sep 3.9" 4.1" 0" ✅ Rainfall sufficient
Oct 3.9" 2.8" 1.1" 💧 Light watering
Nov 3.9" 3.4" 0.5" 💧 Light watering
Dec 4.3" 0" ❄️ Dormant

Water needs are for active growing months only (Mar–Nov in Chilton 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 ~1,842 GDD — county provides 4,103 GDD Excellent fit

Celeriac Planting Timeline — Chilton County, AL

Celeriac Planting Calendar

Activity When Date Range
Start Indoors February 7 Feb 7 – Feb 21
Transplant Outdoors March 14 Mar 14 – Mar 28
Direct Sow February 28 Feb 28 – Mar 21
Harvest June 27 Jun 27 – Aug 1
Fall Sowing September 5 Sep 5 – Sep 19

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

Month-by-Month Timeline

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

Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

0.9"/week · Only during dry spells

📅 Days to Maturity

100–120 days

🧪 Soil pH

Needs 6–7 · Your soil: acceptable

🗺️ USDA Zone

Zone 8b

📆 Growing Season

245 days in Chilton County

Growing Tips for Celeriac in Chilton County

Direct sow Celeriac outdoors after March 14 in Chilton County when soil has warmed and frost danger has passed.

With Chilton 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 Chilton County, AL?

Chilton County is in Zone 8b with an average last frost of March 14. Plan your Celeriac planting based on this frost date — see the calendar above for exact timing.

What planting zone is Chilton County, AL?

Chilton County, Alabama is in USDA Hardiness Zone 8b. The average last spring frost is March 14 and first fall frost is November 14.

When should I plant Celeriac in Chilton County, AL?

In Chilton County, AL, plant Celeriac after the last frost (around March 14) and before the first frost (around November 14). Best results when soil holds above 50°F.

What growing zone is Chilton County, AL for Celeriac?

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

Can Celeriac grow in Chilton County's climate?

Yes — Celeriac grows well in Chilton County's temperate climate. Chilton County averages a 245-day frost-free season, with last frost around March 14 and first frost around November 14.

🌱

Your Chilton County Garden Planner — Free

A 22-page printable planner built for Chilton County (Zone 8b). 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 Chilton County, AL. Local conditions may vary. Last updated: July 2026.

Sources & credits

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