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When to plant Arugula in Dodge County, MN

For Arugula in Dodge County, the safe spring window opens around April 21 and closes around May 12. Last expected frost is April 28, first fall frost October 7, giving a 162-day growing season. A second sowing from July 15 to July 29 extends the harvest into fall.

When to Plant Arugula in Dodge County, MN

Dodge County, Minnesota Zone 4b July

What to do in July

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

Avg. last frost April 28
Avg. first frost October 7
Soil temp (4") 71°F
Watering Moderate
Pest pressure High
Daylight 15 hrs
  1. It's harvest week for arugula

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

  2. Sow arugula for an autumn harvest

    Your first frost is about 10 weeks away — plenty of time for these to mature.

August prep starts now
  • First harvests: arugula

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Arugula is a fast-growing cool-season green with a peppery, nutty flavor. It is excellent in salads and can be harvested as baby greens or mature leaves.

Dodge County, Minnesota is in USDA Zone 4b. The average last spring frost is April 28 and the first fall frost is October 7, giving you a growing season of approximately 162 days.

At an elevation of 1,261 feet, Dodge County receives approximately 34 inches of rainfall annually with predominantly silt loam soil. Summer highs average 83°F, so choose short-season varieties of Arugula to ensure they mature before fall.

Dodge County, MN (Zone 4b) Moderate season
162 days
Last Spring Frost April 28
162 growing days
First Fall Frost October 7

Dodge County Soil Profile

Soil Type

Silt Loam

Soil pH

5.7-7.1

Drainage

Well Drained

Arugula Planting Risk Windows

Early Start (70% safe) ✓ Fits season (61 days to spare)
Start indoors: Mar 13 Transplant: Apr 24 🍅 Harvest: May 29 – Jul 31
Recommended (50%) ✓ Fits season (64 days to spare)
Start indoors: Mar 17 Transplant: Apr 28 🍅 Harvest: Jun 2 – Aug 4
Safe Start (90%) ✓ Fits season (57 days to spare)
Start indoors: Apr 2 Transplant: May 14 🍅 Harvest: Jun 18 – Aug 20

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 Dodge County

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

Soil pH

Your soil pH (5.7–7.1) overlaps with Arugula's range (6.0–7.0), though not a perfect match.

Soil Texture

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

Drainage

Drainage is adequate for Arugula.

Organic Matter

Organic matter is excellent (4.8%) — Arugula will thrive.

How to Plant Arugula

0.5"
Planting Depth
6"
Between Plants
12"
Between Rows

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

Succession Planting Arugula

6
successive plantings in your 162-day season

Sow every 3.4 weeks. Last sowing by Aug 18 to harvest before frost.

For a dedicated fall crop, sow by Jul 15.

Arugula Water Budget

Plant needs
0.6″/week
Rainfall provides
0.9″/week
Watering frequency Natural rainfall sufficient
Season total 0 gal / 100 sq ft

Monthly Watering Guide for Arugula

Arugula needs approximately 0.6 inches of water per week (2.6" per month). Here's how your county's rainfall compares month by month.

Month Arugula Needs Rainfall You Supplement Action
Jan 1.2" 0" ❄️ Dormant
Feb 1.5" 0" ❄️ Dormant
Mar 2.5" 0" ❄️ Dormant
Apr 2.6" 3" 0" ✅ Rainfall sufficient
May 2.6" 3.9" 0" ✅ Rainfall sufficient
Jun 2.6" 4.2" 0" ✅ Rainfall sufficient
Jul 2.6" 3.6" 0" ✅ Rainfall sufficient
Aug 2.6" 4" 0" ✅ Rainfall sufficient
Sep 2.6" 3.3" 0" ✅ Rainfall sufficient
Oct 2.6" 2.4" 0.2" 💧 Light watering
Nov 2.3" 0" ❄️ Dormant
Dec 2.1" 0" ❄️ Dormant

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

Arugula 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.

Arugula needs ~490 GDD — county provides 1,984 GDD Excellent fit

Arugula Planting Timeline — Dodge County, MN

Arugula Planting Calendar

Activity When Date Range
Start Indoors March 17 Mar 17 – Mar 31
Transplant Outdoors April 28 Apr 28 – May 12
Direct Sow April 21 Apr 21 – May 12
Harvest June 2 Jun 2 – Aug 4
Fall Sowing July 15 Jul 15 – Jul 29

Plant 0.5" deep · 6" apart · Rows 12" apart

Month-by-Month Timeline

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

Growing Conditions

☀️ Sun

Partial Shade (3-6 hours)

💧 Water

0.6"/week · Natural rainfall sufficient

📅 Days to Maturity

30–50 days

🧪 Soil pH

Needs 6–7 · Your soil: acceptable

🗺️ USDA Zone

Zone 4b

📆 Growing Season

162 days in Dodge County

Growing Tips for Arugula in Dodge County

Direct sow Arugula outdoors after April 28 in Dodge County when soil has warmed and frost danger has passed.

Your generous 162.0-day season in Dodge County allows multiple plantings of Arugula. Sow every 15.0 days for continuous harvest.

Common pests for Arugula in this region include cabbage worm and flea beetles. Use row covers early in the season and inspect plants weekly.

General growing tips

Sow seeds directly every 2-3 weeks for continuous harvest. Provide afternoon shade in warm weather to prevent bolting. Harvest outer leaves first to extend production.

Companion Planting

Good Companions

Avoid Planting Near

  • Strawberries

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Arugula in Dodge County, MN?

Dodge County is in Zone 4b with an average last frost of April 28. Plan your Arugula planting based on this frost date — see the calendar above for exact timing.

What planting zone is Dodge County, MN?

Dodge County, Minnesota is in USDA Hardiness Zone 4b. The average last spring frost is April 28 and first fall frost is October 7.

When should I plant Arugula in Dodge County, MN?

In Dodge County, MN, plant Arugula after the last frost (around April 28) and before the first frost (around October 7). Best results when soil holds above 50°F.

What growing zone is Dodge County, MN for Arugula?

Dodge County sits in USDA Zone 4b. Arugula grows reliably in zones 3a through 11b, so it's a good fit here.

Can Arugula grow in Dodge County's climate?

Yes — Arugula grows well in Dodge County's temperate climate. Dodge County averages a 162-day frost-free season, with last frost around April 28 and first frost around October 7.

🌱

Your Dodge County Garden Planner — Free

A 22-page printable planner built for Dodge 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 Dodge County, MN. Local conditions may vary. Last updated: July 2026.

Sources & credits

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