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When to plant Impatiens in Wright County County,

Wright County County sits in cold Zone 4b. Plant Impatiens May 15–May 29 for the single annual harvest; the October 6 first frost closes the window.

When to Plant Impatiens in Wright County, MN

Wright County, Minnesota Zone 4b June

June in Wright County, Minnesota — your action list

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

Avg. last frost May 1
Avg. first frost October 6
Soil temp (4") 63°F
Watering Low
Pest pressure High
Daylight 15.4 hrs
Coming up in July — start thinking about
  • Starting indoors: impatiens
  • First harvests: impatiens

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Impatiens (Impatiens walleriana) are the go-to annual for shaded beds and containers. They produce a continuous carpet of flat-faced blooms from transplant until frost, needing little deadheading. Their preference for consistent moisture and part-shade makes them ideal under trees and along north-facing borders.

Wright County, Minnesota is in USDA Zone 4b. The average last spring frost is May 1 and the first fall frost is October 6, giving you a growing season of approximately 158 days.

At an elevation of 997 feet, Wright County receives approximately 32.4 inches of rainfall annually with predominantly silt loam soil. Summer highs average 84°F, so choose short-season varieties of Impatiens to ensure they mature before fall.

Annual Blooms in Summer Pollinator-friendly
Wright County, MN (Zone 4b) Moderate season
158 days
Last Spring Frost May 1
158 growing days
First Fall Frost October 6
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Wright County Soil Profile

Soil Type

Silt Loam

Soil pH

5.7-7.2

Drainage

Well Drained

Impatiens Planting Risk Windows

Early Start (70% safe) ✓ Fits season (2 days to spare)
Start indoors: Feb 21 Transplant: May 9 🌸 Bloom: Jul 25 – Sep 26
Recommended (50%) ✓ Fits season (4 days to spare)
Start indoors: Feb 27 Transplant: May 15 🌸 Bloom: Jul 31 – Oct 2
Safe Start (90%) ✓ Fits season (0 days to spare)
Start indoors: Mar 16 Transplant: Jun 1 🌸 Bloom: Aug 17 – Oct 19

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 Wright County

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

Soil pH

Your soil pH (5.7–7.2) overlaps with Impatiens's range (6.0–6.5), though not a perfect match.

Soil Texture

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

Organic Matter

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

How to Plant Impatiens

10"
Between Plants
12"
Between Rows

Succession Planting Impatiens

3
successive plantings in your 158-day season

Sow every 6.9 weeks. Last sowing by Jul 23 to harvest before frost.

Impatiens Water Budget

Plant needs
1.0″/week
Rainfall provides
0.9″/week
You supply
0.2″/week
Watering frequency Only during dry spells
Season total 234 gal / 100 sq ft
Drought risk

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

Monthly Watering Guide for Impatiens

Impatiens needs approximately 1 inches of water per week (4.3" per month). Here's how your county's rainfall compares month by month.

Month Impatiens Needs Rainfall You Supplement Action
Jan 1.2" 0" ❄️ Dormant
Feb 1.3" 0" ❄️ Dormant
Mar 2.1" 0" ❄️ Dormant
Apr 3.2" 0" ❄️ Dormant
May 4.3" 3.7" 0.6" 💧 Light watering
Jun 4.3" 3.9" 0.4" 💧 Light watering
Jul 4.3" 3.9" 0.4" 💧 Light watering
Aug 4.3" 3.3" 1" 💧 Light watering
Sep 4.3" 3.3" 1" 💧 Light watering
Oct 4.3" 2.7" 1.6" 💧 Light watering
Nov 2" 0" ❄️ Dormant
Dec 1.6" 0" ❄️ Dormant

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

Impatiens 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.

Impatiens needs ~878 GDD — county provides 2,054 GDD Excellent fit

Impatiens Planting Timeline — Wright County, MN

Impatiens Planting Calendar

Activity When Date Range
Start Indoors February 27 Feb 27 – Mar 13
Transplant Outdoors May 15 May 15 – May 29
Bloom July 31 Jul 31 – Oct 2

· 10" apart · Rows 12" apart

Month-by-Month Timeline

MonthActivities
January
February Start Indoors
March Start Indoors
April
May Transplant Outdoors
June
July Bloom
August Bloom
September Bloom
October Bloom
November
December
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Growing Conditions

☀️ Sun

Partial Shade (3-6 hours)

💧 Water

1"/week · Only during dry spells

📅 Days to Maturity

60–75 days

🧪 Soil pH

Needs 6–6.5 · Your soil: acceptable

🗺️ USDA Zone

Zone 4b

📆 Growing Season

158 days in Wright County

Growing Tips for Impatiens in Wright County

Direct sow Impatiens outdoors after May 01 in Wright County when soil has warmed and frost danger has passed.

General growing tips

Start seeds indoors 8–10 weeks before last frost at 70–75°F; germination requires light — do not cover seeds. Transplant after last frost once nights consistently exceed 50°F. Water regularly — wilting causes bud drop and they rarely fully recover the same flush. Watch for impatiens downy mildew (IDM); consider New Guinea impatiens as a resistant alternative in affected regions. Pinch tips at planting to encourage branching.

Companion Planting

Good Companions

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Impatiens in Wright County, MN?

Wright County is in Zone 4b with an average last frost of May 1. Plan your Impatiens planting based on this frost date — see the calendar above for exact timing.

What planting zone is Wright County, MN?

Wright County, Minnesota is in USDA Hardiness Zone 4b. The average last spring frost is May 1 and first fall frost is October 6.

When should I plant Impatiens in Wright County County, ?

In Wright County County, , plant Impatiens after the last frost (around May 1) and before the first frost (around October 6). Best results when soil holds above 50°F.

What growing zone is Wright County County, for Impatiens?

Wright County County sits in USDA Zone 4b. Impatiens grows reliably in zones 2a through 11b, so it's a good fit here.

Can Impatiens grow in Wright County County's climate?

Yes — Impatiens grows well in Wright County County's temperate climate. Wright County County averages a 158-day frost-free season, with last frost around May 1 and first frost around October 6.

🌱

Your Wright County Garden Planner — Free

A 22-page printable planner built for Wright 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 Wright 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.