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When to plant Rue in Chippewa County, MN

Chippewa County sits in cold Zone 4b. Plant Rue May 9–May 23 for the single annual harvest; the October 4 first frost closes the window.

When to Plant Rue in Chippewa County, MN

Chippewa County, Minnesota Zone 4b June

June in the garden — Chippewa County, Minnesota

We've pulled the most time-sensitive tasks for Chippewa County, Minnesota this June and put them front and centre. Tackle them in order.

Avg. last frost May 2
Avg. first frost October 4
Soil temp (4") 64°F
Watering Low
Pest pressure High
Daylight 15.4 hrs
Before July arrives, get these ready
  • First harvests: rue

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Rue is a bitter, aromatic perennial herb with bluish-green foliage used historically in medicine and as a pest deterrent. Handle with care as its sap can cause skin irritation.

Chippewa County, Minnesota is in USDA Zone 4b. The average last spring frost is May 2 and the first fall frost is October 4, giving you a growing season of approximately 155 days.

At an elevation of 626 feet, Chippewa County receives approximately 34.7 inches of rainfall annually with predominantly silt loam soil. Summer highs average 81°F, so choose short-season varieties of Rue to ensure they mature before fall.

Chippewa County, MN (Zone 4b) Moderate season
155 days
Last Spring Frost May 2
155 growing days
First Fall Frost October 4

Chippewa County Soil Profile

Soil Type

Silt Loam

Soil pH

6.3-7

Drainage

Well Drained

Rue Planting Risk Windows

Early Start (70% safe) ✓ Fits season (14 days to spare)
Transplant: May 4 🍅 Harvest: Jul 13 – Sep 14
Recommended (50%) ✓ Fits season (15 days to spare)
Transplant: May 9 🍅 Harvest: Jul 18 – Sep 19
Safe Start (90%) ✓ Fits season (12 days to spare)
Transplant: May 22 🍅 Harvest: Jul 31 – 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 Chippewa County

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

Soil pH

Your soil pH (6.3–7.0) is within Rue's preferred range (6.0–7.5).

Soil Texture

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

Drainage

Drainage is adequate for Rue.

Organic Matter

Organic matter is excellent (4.7%) — Rue will thrive.

How to Plant Rue

0.5"
Planting Depth
8"
Between Plants
12"
Between Rows

Succession Planting Rue

2
successive plantings in your 155-day season

Sow every 8 weeks. Last sowing by Jul 06 to harvest before frost.

Rue Water Budget

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

Monthly Watering Guide for Rue

Rue needs approximately 0.5 inches of water per week (2.2" per month). Here's how your county's rainfall compares month by month.

Month Rue Needs Rainfall You Supplement Action
Jan 1.7" 0" ❄️ Dormant
Feb 1.7" 0" ❄️ Dormant
Mar 2.1" 0" ❄️ Dormant
Apr 2.9" 0" ❄️ Dormant
May 2.2" 3.6" 0" ✅ Rainfall sufficient
Jun 2.2" 4.1" 0" ✅ Rainfall sufficient
Jul 2.2" 4.4" 0" ✅ Rainfall sufficient
Aug 2.2" 3.8" 0" ✅ Rainfall sufficient
Sep 2.2" 3.4" 0" ✅ Rainfall sufficient
Oct 2.2" 3" 0" ✅ Rainfall sufficient
Nov 2.3" 0" ❄️ Dormant
Dec 1.7" 0" ❄️ Dormant

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

Rue 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.

Rue needs ~860 GDD — county provides 1,666 GDD Excellent fit

Rue Planting Timeline — Chippewa County, MN

Rue Planting Calendar

Activity When Date Range
Transplant Outdoors May 9 May 9 – May 23
Harvest July 18 Jul 18 – Sep 19

Plant 0.5" deep · 8" apart · Rows 12" apart

Month-by-Month Timeline

MonthActivities
January
February
March
April
May Transplant Outdoors
June
July Harvest
August Harvest
September Harvest
October
November
December

Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

0.5"/week · Natural rainfall sufficient

📅 Days to Maturity

70–90 days

🧪 Soil pH

Needs 6–7.5 · Your soil: ideal

🗺️ USDA Zone

Zone 4b

📆 Growing Season

155 days in Chippewa County

Growing Tips for Rue in Chippewa County

Direct sow Rue outdoors after May 02 in Chippewa County when soil has warmed and frost danger has passed.

General growing tips

Start seeds indoors or direct sow. Plant in well-drained soil. Wear gloves when handling as sap can cause phytophotodermatitis. Prune in early spring.

Companion Planting

Good Companions

Avoid Planting Near

  • Basil
  • Sage

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Rue in Chippewa County, MN?

Chippewa County is in Zone 4b with an average last frost of May 2. Plan your Rue planting based on this frost date — see the calendar above for exact timing.

What planting zone is Chippewa County, MN?

Chippewa County, Minnesota is in USDA Hardiness Zone 4b. The average last spring frost is May 2 and first fall frost is October 4.

When should I plant Rue in Chippewa County, MN?

In Chippewa County, MN, plant Rue after the last frost (around May 2) and before the first frost (around October 4). Best results when soil holds above 50°F.

What growing zone is Chippewa County, MN for Rue?

Chippewa County sits in USDA Zone 4b. Rue grows reliably in zones 4a through 9b, so it's a good fit here.

Can Rue grow in Chippewa County's climate?

Yes — Rue grows well in Chippewa County's temperate climate. Chippewa County averages a 155-day frost-free season, with last frost around May 2 and first frost around October 4.

🌱

Your Chippewa County Garden Planner — Free

A 22-page printable planner built for Chippewa 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 Chippewa County, MN. 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.