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When to Plant Broccoli Rabe in Crow Wing County, MN

Crow Wing County, Minnesota Zone 4a May

May to-do list for Crow Wing County, Minnesota

May rewards gardeners who work with the weather, not against it. Here's how to stay in step this month in Crow Wing County, Minnesota.

Avg. last frost May 5
Avg. first frost October 3
Soil temp (4") 48°F
Watering Moderate
Pest pressure Low
Daylight 14.8 hrs
  1. Move broccoli rabe into the garden

    Bring a watering can to the bed. Each transplant gets a drink the moment it's in the ground, not ten minutes later.

Before June arrives, get these ready
  • Starting indoors: broccoli rabe
  • First harvests: broccoli rabe

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Broccoli rabe (rapini) is a brassica grown for its slightly bitter, nutty-flavored florets, leaves, and stems. It is a staple in Italian cooking.

Crow Wing County, Minnesota is in USDA Zone 4a. The average last spring frost is May 5 and the first fall frost is October 3, giving you a growing season of approximately 151 days.

At an elevation of 783 feet, Crow Wing County receives approximately 33.2 inches of rainfall annually with predominantly silt loam soil. Summer highs average 78°F, so choose short-season varieties of Broccoli Rabe to ensure they mature before fall.

Crow Wing County, MN (Zone 4a) Moderate season
151 days
Last Spring Frost May 5
151 growing days
First Fall Frost October 3

Crow Wing County Soil Profile

Soil Type

Silt Loam

Soil pH

6-6.7

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (75 days to spare)
Start indoors: Mar 18 Transplant: Apr 29 🍅 Harvest: Jun 10 – Jul 15
Recommended (50%) ✓ Fits season (74 days to spare)
Start indoors: Mar 24 Transplant: May 5 🍅 Harvest: Jun 16 – Jul 21
Safe Start (90%) ✓ Fits season (71 days to spare)
Start indoors: Apr 7 Transplant: May 19 🍅 Harvest: Jun 30 – Aug 4

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 Crow Wing County

How your county's soil matches Broccoli Rabe's growing requirements.

Soil pH

Your soil pH (6.0–6.7) is within Broccoli Rabe's preferred range (6.0–7.5).

Soil Texture

The silt loam soil in Crow Wing County is excellent for Broccoli Rabe — good drainage, moisture retention, and nutrient holding capacity.

Organic Matter

Organic matter is excellent (4.0%) — Broccoli Rabe will thrive.

How to Plant Broccoli Rabe

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 Broccoli Rabe

4
successive plantings in your 151-day season

Sow every 4.6 weeks. Last sowing by Aug 04 to harvest before frost.

For a dedicated fall crop, sow by Jul 11.

Plant Water Budget

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

Monthly Watering Guide for Broccoli Rabe

Broccoli Rabe needs approximately 0.8 inches of water per week (3.5" per month). Here's how your county's rainfall compares month by month.

Month Broccoli Rabe Needs Rainfall You Supplement Action
Jan 1.4" 0" ❄️ Dormant
Feb 1.6" 0" ❄️ Dormant
Mar 2.2" 0" ❄️ Dormant
Apr 3.3" 0" ❄️ Dormant
May 3.5" 3.3" 0.2" 💧 Light watering
Jun 3.5" 3.9" 0" ✅ Rainfall sufficient
Jul 3.5" 4.2" 0" ✅ Rainfall sufficient
Aug 3.5" 3.3" 0.2" 💧 Light watering
Sep 3.5" 3.2" 0.3" 💧 Light watering
Oct 3.5" 2.8" 0.7" 💧 Light watering
Nov 2.5" 0" ❄️ Dormant
Dec 1.7" 0" ❄️ Dormant

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

Broccoli Rabe 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.

Broccoli Rabe needs ~425 GDD — county provides 1,283 GDD Excellent fit

Broccoli Rabe Planting Timeline — Crow Wing County, MN

Broccoli Rabe Planting Calendar

Activity When Date Range
Start Indoors March 24 Mar 24 – Apr 7
Transplant Outdoors May 5 May 5 – May 19
Direct Sow April 28 Apr 28 – May 19
Harvest June 16 Jun 16 – Jul 21
Fall Sowing July 11 Jul 11 – Jul 25

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

Month-by-Month Timeline

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

Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

0.8"/week · Natural rainfall sufficient

📅 Days to Maturity

40–60 days

🧪 Soil pH

Needs 6–7.5 · Your soil: ideal

🗺️ USDA Zone

Zone 4a

📆 Growing Season

151 days in Crow Wing County

Growing Tips for Broccoli Rabe in Crow Wing County

Direct sow Broccoli Rabe outdoors after May 05 in Crow Wing County when soil has warmed and frost danger has passed.

Your generous 151.0-day season in Crow Wing County allows multiple plantings of Broccoli Rabe. Sow every 20.0 days for continuous harvest.

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

General growing tips

Direct sow in spring or fall. Harvest when small yellow flower buds first appear but before they open. Cut the main shoot first to encourage side shoots.

Companion Planting

Good Companions

Avoid Planting Near

  • Strawberries

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Broccoli Rabe in Crow Wing County, MN?

Crow Wing County is in Zone 4a with an average last frost of May 5. Plan your Broccoli Rabe planting based on this frost date — see the calendar above for exact timing.

What planting zone is Crow Wing County, MN?

Crow Wing County, Minnesota is in USDA Hardiness Zone 4a. The average last spring frost is May 5 and first fall frost is October 3.

🌱

Your Crow Wing County Garden Planner — Free

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

Sources & credits

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