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When to plant Celery in Linn County, KS

In Zone 6b (Linn County), direct-sow Celery between March 26 and April 16 for spring, after the April 9 last-frost mark. A second sowing from August 16 to August 30 extends the harvest into fall.

When to Plant Celery in Linn County, KS

Celery
Linn County, Kansas Zone 6b June

Linn County, Kansas gardeners: here's your June plan

Your garden in Linn County, Kansas is working on a schedule, even when you're not. Here's where you should be this June.

Avg. last frost April 9
Avg. first frost October 25
Soil temp (4") 72°F
Watering Low
Pest pressure High
Daylight 14.6 hrs
A few tasks this June that'll pay off in July
  • First harvests: celery

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Celery is a marshland plant that requires consistent moisture and cool temperatures to produce crisp, flavorful stalks. It is a rewarding but demanding garden crop.

Linn County, Kansas is in USDA Zone 6b. The average last spring frost is April 9 and the first fall frost is October 25, giving you a growing season of approximately 199 days.

At an elevation of 434 feet, Linn County receives approximately 33 inches of rainfall annually with predominantly loam soil. Summer highs average 86°F, providing good warmth for Celery during the growing season.

Linn County, KS (Zone 6b) Moderate season
199 days
Last Spring Frost April 9
199 growing days
First Fall Frost October 25

Linn County Soil Profile

Soil Type

Loam

Soil pH

6.6-7.2

Drainage

Well Drained

Celery Planting Risk Windows

Early Start (70% safe) ✓ Fits season (56 days to spare)
Start indoors: Feb 28 Transplant: Apr 4 🍅 Harvest: Jun 27 – Aug 22
Recommended (50%) ✓ Fits season (59 days to spare)
Start indoors: Mar 5 Transplant: Apr 9 🍅 Harvest: Jul 2 – Aug 27
Safe Start (90%) ✓ Fits season (57 days to spare)
Start indoors: Mar 18 Transplant: Apr 22 🍅 Harvest: Jul 15 – Sep 9

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 Linn County

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

Soil pH

Your soil pH (6.6–7.2) overlaps with Celery's range (6.0–7.0), though not a perfect match.

Soil Texture

The loam soil in Linn County is excellent for Celery — good drainage, moisture retention, and nutrient holding capacity.

Organic Matter

Organic matter is moderate (3.7%). Annual compost additions will help Celery.

How to Plant Celery

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

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

Succession Planting Celery

2
successive plantings in your 199-day season

Sow every 9.1 weeks. Last sowing by Jun 27 to harvest before frost.

For a dedicated fall crop, sow by Aug 16.

Celery Water Budget

Plant needs
1.3″/week
Rainfall provides
0.7″/week
You supply
0.7″/week
Watering frequency 2-3 times/week
Season total 1,283 gal / 100 sq ft
Drought risk

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

Monthly Watering Guide for Celery

Celery needs approximately 1.3 inches of water per week (5.6" per month). Here's how your county's rainfall compares month by month.

Month Celery Needs Rainfall You Supplement Action
Jan 0.9" 0" ❄️ Dormant
Feb 1.2" 0" ❄️ Dormant
Mar 1.8" 0" ❄️ Dormant
Apr 5.6" 3.5" 2.1" 💧 Light watering
May 5.6" 5.4" 0.2" 💧 Light watering
Jun 5.6" 4.6" 1" 💧 Light watering
Jul 5.6" 4.2" 1.4" 💧 Light watering
Aug 5.6" 4.5" 1.1" 💧 Light watering
Sep 5.6" 2.6" 3" 🚿 Regular watering
Oct 5.6" 2.3" 3.3" 🚿 Regular watering
Nov 1.1" 0" ❄️ Dormant
Dec 0.9" 0" ❄️ Dormant

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

Celery 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.

Celery needs ~1,450 GDD — county provides 2,885 GDD Excellent fit

Celery Planting Timeline — Linn County, KS

Celery Planting Calendar

Activity When Date Range
Start Indoors March 5 Mar 5 – Mar 19
Transplant Outdoors April 9 Apr 9 – Apr 23
Direct Sow March 26 Mar 26 – Apr 16
Harvest July 2 Jul 2 – Aug 27
Fall Sowing August 16 Aug 16 – Aug 30

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

Month-by-Month Timeline

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

Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

1.3"/week · 2-3 times/week

📅 Days to Maturity

80–120 days

🧪 Soil pH

Needs 6–7 · Your soil: acceptable

🗺️ USDA Zone

Zone 6b

📆 Growing Season

199 days in Linn County

Growing Tips for Celery in Linn County

Direct sow Celery outdoors after April 09 in Linn County when soil has warmed and frost danger has passed.

Common pests for Celery 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. Keep soil consistently moist and never let it dry out. Blanch stalks by mounding soil or using collars for milder 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 Celery in Linn County, KS?

Linn County is in Zone 6b with an average last frost of April 9. Plan your Celery planting based on this frost date — see the calendar above for exact timing.

What planting zone is Linn County, KS?

Linn County, Kansas is in USDA Hardiness Zone 6b. The average last spring frost is April 9 and first fall frost is October 25.

When should I plant Celery in Linn County, KS?

In Linn County, KS, plant Celery after the last frost (around April 9) and before the first frost (around October 25). Best results when soil holds above 50°F.

What growing zone is Linn County, KS for Celery?

Linn County sits in USDA Zone 6b. Celery grows reliably in zones 2a through 10b, so it's a good fit here.

Can Celery grow in Linn County's climate?

Yes — Celery grows well in Linn County's temperate climate. Linn County averages a 199-day frost-free season, with last frost around April 9 and first frost around October 25.

🌱

Your Linn County Garden Planner — Free

A 22-page printable planner built for Linn County (Zone 6b). 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 Linn County, KS. 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.