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When to plant Celeriac in Stone County, MO

Spring Celeriac in Stone County goes in April 2–April 23, once nighttime temps stop dipping near freezing. A second sowing from August 11 to August 25 extends the harvest into fall.

When to Plant Celeriac in Stone County, MO

Stone County, Missouri Zone 7a July

July to-do list for Stone County, Missouri

We've pulled the most time-sensitive tasks for Stone County, Missouri this July and put them front and centre. Tackle them in order.

Avg. last frost April 16
Avg. first frost October 20
Soil temp (4") 81°F
Watering Low
Pest pressure High
Daylight 14.3 hrs
  1. Harvest celeriac as they ripen

    The more you pick, the more the plant produces. Letting fruit overripen tells the plant it's time to stop.

August will be here before you know it — start on
  • First harvests: celeriac
  • Fall sowing: 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.

Stone County, Missouri is in USDA Zone 7a. The average last spring frost is April 16 and the first fall frost is October 20, giving you a growing season of approximately 187 days.

At an elevation of 1,310 feet, Stone County receives approximately 40.4 inches of rainfall annually with predominantly silt loam soil. Summer highs average 86°F, providing good warmth for Celeriac during the growing season.

Stone County, MO (Zone 7a) Moderate season
187 days
Last Spring Frost April 16
187 growing days
First Fall Frost October 20

Stone County Soil Profile

Soil Type

Silt Loam

Soil pH

5.5-6.5

Drainage

Well Drained

Celeriac Planting Risk Windows

Early Start (70% safe) ✓ Fits season (48 days to spare)
Start indoors: Mar 6 Transplant: Apr 10 🍅 Harvest: Jul 24 – Aug 28
Recommended (50%) ✓ Fits season (47 days to spare)
Start indoors: Mar 12 Transplant: Apr 16 🍅 Harvest: Jul 30 – Sep 3
Safe Start (90%) ✓ Fits season (48 days to spare)
Start indoors: Mar 26 Transplant: Apr 30 🍅 Harvest: Aug 13 – Sep 17

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 Stone County

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

Soil pH

Your soil pH (5.5–6.5) overlaps with Celeriac's range (6.0–7.0), though not a perfect match.

Soil Texture

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

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.

Celeriac Water Budget

Plant needs
0.9″/week
Rainfall provides
0.9″/week
Watering frequency Natural rainfall sufficient
Season total 0 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 1.6" 0" ❄️ Dormant
Feb 1.6" 0" ❄️ Dormant
Mar 2.4" 0" ❄️ Dormant
Apr 3.9" 3.9" 0" ✅ Rainfall sufficient
May 3.9" 4.8" 0" ✅ Rainfall sufficient
Jun 3.9" 5.1" 0" ✅ Rainfall sufficient
Jul 3.9" 4.7" 0" ✅ Rainfall sufficient
Aug 3.9" 4.4" 0" ✅ Rainfall sufficient
Sep 3.9" 3" 0.9" 💧 Light watering
Oct 3.9" 3.6" 0.3" 💧 Light watering
Nov 2.8" 0" ❄️ Dormant
Dec 2.5" 0" ❄️ Dormant

Water needs are for active growing months only (Apr–Oct in Stone 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 ~1,595 GDD — county provides 2,711 GDD Excellent fit

Celeriac Planting Timeline — Stone County, MO

Celeriac Planting Calendar

Activity When Date Range
Start Indoors March 12 Mar 12 – Mar 26
Transplant Outdoors April 16 Apr 16 – Apr 30
Direct Sow April 2 Apr 2 – Apr 23
Harvest July 30 Jul 30 – Sep 3
Fall Sowing August 11 Aug 11 – Aug 25

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

Month-by-Month Timeline

MonthActivities
January
February
March Start Indoors
April Transplant Outdoors Direct Sow
May
June
July Harvest
August Fall Sowing Harvest
September Harvest
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 7a

📆 Growing Season

187 days in Stone County

Growing Tips for Celeriac in Stone County

Direct sow Celeriac outdoors after April 16 in Stone County when soil has warmed and frost danger has passed.

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 Stone County, MO?

Stone County is in Zone 7a with an average last frost of April 16. Plan your Celeriac planting based on this frost date — see the calendar above for exact timing.

What planting zone is Stone County, MO?

Stone County, Missouri is in USDA Hardiness Zone 7a. The average last spring frost is April 16 and first fall frost is October 20.

When should I plant Celeriac in Stone County, MO?

In Stone County, MO, plant Celeriac after the last frost (around April 16) and before the first frost (around October 20). Best results when soil holds above 50°F.

What growing zone is Stone County, MO for Celeriac?

Stone County sits in USDA Zone 7a. Celeriac grows reliably in zones 3a through 9b, so it's a good fit here.

Can Celeriac grow in Stone County's climate?

Yes — Celeriac grows well in Stone County's temperate climate. Stone County averages a 187-day frost-free season, with last frost around April 16 and first frost around October 20.

🌱

Your Stone County Garden Planner — Free

A 22-page printable planner built for Stone County (Zone 7a). 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 Stone County, MO. 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.