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When to plant Celeriac in Columbia County, FL

Columbia County's climate puts the Celeriac spring window between February 8 and March 1. aim for a steady week of warm soil before planting. A second sowing from October 2 to October 16 extends the harvest into fall.

When to Plant Celeriac in Columbia County, FL

Columbia County, Florida Zone 9a June

What to do in June

If you only do a handful of things in the garden this June, make it these. They're sequenced around your zone's frost timing.

Avg. last frost March 1
Avg. first frost November 27
Soil temp (4") 85°F
Watering Low
Pest pressure High
Daylight 13.9 hrs
  1. It's harvest week for celeriac

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

Get ahead of July
  • 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.

Columbia County, Florida is in USDA Zone 9a. The average last spring frost is March 1 and the first fall frost is November 27, giving you a growing season of approximately 271 days.

At an elevation of 156 feet, Columbia County receives approximately 61 inches of rainfall annually with predominantly sand soil. Summer highs average 96°F, so Celeriac may need afternoon shade and extra watering during peak heat. Sandy soil warms quickly in spring — great for early planting — but Celeriac will need more frequent watering and organic matter to retain nutrients. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Celeriac root diseases.

Columbia County, FL (Zone 9a) Year-round
271 days
Last Spring Frost March 1
271 growing days
First Fall Frost November 27

Columbia County Soil Profile

Soil Type

Sand

Soil pH

4.8-5.7

Drainage

Well Drained

Celeriac Planting Risk Windows

Early Start (70% safe) ✓ Fits season (135 days to spare)
Start indoors: Jan 17 Transplant: Feb 14 🍅 Harvest: May 30 – Jul 4
Recommended (50%) ✓ Fits season (131 days to spare)
Start indoors: Feb 1 Transplant: Mar 1 🍅 Harvest: Jun 14 – Jul 19
Safe Start (90%) ✓ Fits season (129 days to spare)
Start indoors: Feb 26 Transplant: Mar 26 🍅 Harvest: Jul 9 – Aug 13

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 Columbia County

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

Soil pH

Your soil pH (4.8–5.7) is more acidic than Celeriac prefers (6.0–7.0). Add garden lime to raise pH.

Soil Texture

Sandy soil in Columbia County warms quickly in spring but drains fast. Celeriac will need more frequent watering and regular compost additions to retain nutrients.

Drainage

Celeriac is a heavy drinker but your soil drains very quickly. Mulch heavily and consider drip irrigation.

Organic Matter

Organic matter is low (1.6%). Add 2-3 inches of compost before planting Celeriac.

How to Plant Celeriac

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

Fall planting: Sow 8 weeks before your first frost date for a fall harvest.

Celeriac Water Budget

Plant needs
0.9″/week
Rainfall provides
1.0″/week
You supply
0.3″/week
Watering frequency Only during dry spells
Season total 650 gal / 100 sq ft
Drought risk

Water stress score is 6/10 — consider drought-tolerant varieties and mulching

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 2.5" 0" ❄️ Dormant
Feb 3.4" 0" ❄️ Dormant
Mar 3.9" 3.4" 0.5" 💧 Light watering
Apr 3.9" 2.9" 1" 💧 Light watering
May 3.9" 4.3" 0" ✅ Rainfall sufficient
Jun 3.9" 9.3" 0" ✅ Rainfall sufficient
Jul 3.9" 10" 0" ✅ Rainfall sufficient
Aug 3.9" 8" 0" ✅ Rainfall sufficient
Sep 3.9" 7.1" 0" ✅ Rainfall sufficient
Oct 3.9" 4.9" 0" ✅ Rainfall sufficient
Nov 3.9" 2.7" 1.2" 💧 Light watering
Dec 2.4" 0" ❄️ Dormant

Water needs are for active growing months only (Mar–Nov in Columbia 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 ~2,420 GDD — county provides 5,962 GDD Excellent fit

Celeriac Planting Timeline — Columbia County, FL

Celeriac Planting Calendar

Activity When Date Range
Start Indoors February 1 Feb 1 – Feb 15
Transplant Outdoors March 1 Mar 1 – Mar 15
Direct Sow February 8 Feb 8 – Mar 1
Harvest June 14 Jun 14 – Jul 19
Fall Sowing October 2 Oct 2 – Oct 16

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
September
October Fall Sowing
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: too_acidic

🗺️ USDA Zone

Zone 9a

📆 Growing Season

271 days in Columbia County

Growing Tips for Celeriac in Columbia County

Direct sow Celeriac outdoors after March 01 in Columbia County when soil has warmed and frost danger has passed.

Sandy soil in Columbia County dries quickly — mulch Celeriac with 2-3 inches of straw and water deeply 2-3 times per week rather than lightly every day.

With summer highs reaching 96°F in Columbia County, provide afternoon shade for Celeriac and water deeply in the morning.

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 Columbia County, FL?

Columbia County is in Zone 9a with an average last frost of March 1. Plan your Celeriac planting based on this frost date — see the calendar above for exact timing.

What planting zone is Columbia County, FL?

Columbia County, Florida is in USDA Hardiness Zone 9a. The average last spring frost is March 1 and first fall frost is November 27.

When should I plant Celeriac in Columbia County, FL?

In Columbia County, FL, plant Celeriac after the last frost (around March 1) and before the first frost (around November 27). Best results when soil holds above 50°F.

What growing zone is Columbia County, FL for Celeriac?

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

Can Celeriac grow in Columbia County's climate?

Yes — Celeriac grows well in Columbia County's temperate climate. Columbia County averages a 271-day frost-free season, with last frost around March 1 and first frost around November 27.

🌱

Your Columbia County Garden Planner — Free

A 22-page printable planner built for Columbia County (Zone 9a). 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 Columbia County, FL. Local conditions may vary. Last updated: June 2026.

Sources & credits

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