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When to Plant Celery in Yellow Medicine County, MN

Yellow Medicine County, Minnesota Zone 4b May

Yellow Medicine County, Minnesota gardeners: here's your May plan

Your garden in Yellow Medicine County, Minnesota is working on a schedule, even when you're not. Here's where you should be this May.

Avg. last frost April 30
Avg. first frost October 4
Soil temp (4") 52°F
Watering Moderate
Pest pressure Low
Daylight 14.6 hrs
A few tasks this May that'll pay off in June
  • Starting indoors: 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.

Yellow Medicine County, Minnesota is in USDA Zone 4b. The average last spring frost is April 30 and the first fall frost is October 4, giving you a growing season of approximately 157 days.

At an elevation of 1,382 feet, Yellow Medicine County receives approximately 34 inches of rainfall annually with predominantly silt loam soil. Summer highs average 82°F, so choose short-season varieties of Celery to ensure they mature before fall.

Yellow Medicine County, MN (Zone 4b) Moderate season
157 days
Last Spring Frost April 30
157 growing days
First Fall Frost October 4

Yellow Medicine County Soil Profile

Soil Type

Silt Loam

Soil pH

6.2-6.8

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (15 days to spare)
Start indoors: Mar 14 Transplant: Apr 25 🍅 Harvest: Jul 18 – Sep 12
Recommended (50%) ✓ Fits season (17 days to spare)
Start indoors: Mar 19 Transplant: Apr 30 🍅 Harvest: Jul 23 – Sep 17
Safe Start (90%) ✓ Fits season (12 days to spare)
Start indoors: Apr 3 Transplant: May 15 🍅 Harvest: Aug 7 – Oct 2

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 Yellow Medicine County

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

Soil pH

Your soil pH (6.2–6.8) is within Celery's preferred range (6.0–7.0).

Soil Texture

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

Drainage

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

Organic Matter

Organic matter is excellent (4.3%) — Celery will thrive.

How to Plant Celery

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

Fall planting: Sow 12 weeks before your first frost date for a fall harvest.

Succession Planting Celery

2
successive plantings in your 157-day season

Sow every 9.1 weeks. Last sowing by Jun 06 to harvest before frost.

For a dedicated fall crop, sow by Jul 12.

Plant Water Budget

Plant needs
1.3″/week
Rainfall provides
0.9″/week
You supply
0.9″/week
Watering frequency 2-3 times/week
Season total 1,309 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 1.6" 0" ❄️ Dormant
Feb 1.6" 0" ❄️ Dormant
Mar 2" 0" ❄️ Dormant
Apr 5.6" 3" 2.6" 💧 Light watering
May 5.6" 3.7" 1.9" 💧 Light watering
Jun 5.6" 4.2" 1.4" 💧 Light watering
Jul 5.6" 4.4" 1.2" 💧 Light watering
Aug 5.6" 3.8" 1.8" 💧 Light watering
Sep 5.6" 2.9" 2.7" 💧 Light watering
Oct 5.6" 2.5" 3.1" 🚿 Regular watering
Nov 2.3" 0" ❄️ Dormant
Dec 2" 0" ❄️ Dormant

Water needs are for active growing months only (Apr–Oct in Yellow Medicine 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 ~1,150 GDD — county provides 1,805 GDD Excellent fit

Celery Planting Timeline — Yellow Medicine County, MN

Celery Planting Calendar

Activity When Date Range
Start Indoors March 19 Mar 19 – Apr 2
Transplant Outdoors April 30 Apr 30 – May 14
Direct Sow April 23 Apr 23 – May 14
Harvest July 23 Jul 23 – Sep 17
Fall Sowing July 12 Jul 12 – Jul 26

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

Month-by-Month Timeline

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

🗺️ USDA Zone

Zone 4b

📆 Growing Season

157 days in Yellow Medicine County

Growing Tips for Celery in Yellow Medicine County

Direct sow Celery outdoors after April 30 in Yellow Medicine 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 Yellow Medicine County, MN?

Yellow Medicine County is in Zone 4b with an average last frost of April 30. Plan your Celery planting based on this frost date — see the calendar above for exact timing.

What planting zone is Yellow Medicine County, MN?

Yellow Medicine County, Minnesota is in USDA Hardiness Zone 4b. The average last spring frost is April 30 and first fall frost is October 4.

🌱

Your Yellow Medicine County Garden Planner — Free

A 24-page printable planner built for Yellow Medicine County (Zone 4b). 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 Yellow Medicine County, MN. Local conditions may vary. Last updated: May 2026.

Sources & credits

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