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When to plant Impatiens in Ness County, KS

In Ness County, Impatiens is a single-season spring crop — there's no second fall window. Plant April 28–May 12 for an 60–75-day harvest, finishing well before the October 16 first frost.

When to Plant Impatiens in Ness County, KS

Ness County, Kansas Zone 6a June

June in Ness County, Kansas — your action list

Welcome to June in Zone 6a. These are the moves that will have the biggest impact on your growing season.

Avg. last frost April 21
Avg. first frost October 16
Soil temp (4") 74°F
Watering Low
Pest pressure High
Daylight 14.7 hrs
  1. Get impatiens seeds going inside

    These need a head start before your last frost (April 21). Sow into cells now so you're ready to transplant in a few weeks.

Get ahead of July
  • 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.

Ness County, Kansas is in USDA Zone 6a. The average last spring frost is April 21 and the first fall frost is October 16, giving you a growing season of approximately 178 days.

At an elevation of 668 feet, Ness County receives approximately 26.4 inches of rainfall annually with predominantly loam soil. Summer highs average 90°F, providing good warmth for Impatiens during the growing season.

Annual Blooms in Summer Pollinator-friendly
Ness County, KS (Zone 6a) Moderate season
178 days
Last Spring Frost April 21
178 growing days
First Fall Frost October 16

Ness County Soil Profile

Soil Type

Loam

Soil pH

6.7-7.6

Drainage

Well Drained

Impatiens Planting Risk Windows

Early Start (70% safe) ✓ Fits season (2 days to spare)
Start indoors: Feb 19 Transplant: Apr 23 🌸 Bloom: Jul 2 – Oct 8
Recommended (50%) ✓ Fits season (3 days to spare)
Start indoors: Feb 24 Transplant: Apr 28 🌸 Bloom: Jul 7 – Oct 13
Safe Start (90%) ✓ Fits season (2 days to spare)
Start indoors: Mar 9 Transplant: May 11 🌸 Bloom: Jul 20 – Oct 26

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 Ness County

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

Soil pH

Your soil pH (6.7–7.6) is more alkaline than Impatiens prefers (6.0–6.5). Add sulfur or peat moss to lower pH.

Soil Texture

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

Organic Matter

Organic matter is moderate (3.4%). Annual compost additions will help Impatiens.

How to Plant Impatiens

10"
Between Plants
12"
Between Rows

Succession Planting Impatiens

3
successive plantings in your 178-day season

Sow every 6.9 weeks. Last sowing by Aug 02 to harvest before frost.

Impatiens Water Budget

Plant needs
1.0″/week
Rainfall provides
0.6″/week
You supply
0.5″/week
Watering frequency 1-2 times/week
Season total 717 gal / 100 sq ft
Drought risk

Water stress score is 8/10 — 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 0.7" 0" ❄️ Dormant
Feb 0.8" 0" ❄️ Dormant
Mar 1.8" 0" ❄️ Dormant
Apr 4.3" 3.1" 1.2" 💧 Light watering
May 4.3" 4.1" 0.2" 💧 Light watering
Jun 4.3" 4.5" 0" ✅ Rainfall sufficient
Jul 4.3" 3.1" 1.2" 💧 Light watering
Aug 4.3" 2.7" 1.6" 💧 Light watering
Sep 4.3" 2.2" 2.1" 💧 Light watering
Oct 4.3" 1.7" 2.6" 🚿 Regular watering
Nov 1" 0" ❄️ Dormant
Dec 0.6" 0" ❄️ Dormant

Water needs are for active growing months only (Apr–Oct in Ness 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 ~1,181 GDD — county provides 3,115 GDD Excellent fit

Impatiens Planting Timeline — Ness County, KS

Impatiens Planting Calendar

Activity When Date Range
Start Indoors February 24 Feb 24 – Mar 10
Transplant Outdoors April 28 Apr 28 – May 12
Bloom July 7 Jul 7 – Oct 13

· 10" apart · Rows 12" apart

Month-by-Month Timeline

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

Growing Conditions

☀️ Sun

Partial Shade (3-6 hours)

💧 Water

1"/week · 1-2 times/week

📅 Days to Maturity

60–75 days

🧪 Soil pH

Needs 6–6.5 · Your soil: too_alkaline

🗺️ USDA Zone

Zone 6a

📆 Growing Season

178 days in Ness County

Growing Tips for Impatiens in Ness County

Direct sow Impatiens outdoors after April 21 in Ness 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 Ness County, KS?

Ness County is in Zone 6a with an average last frost of April 21. Plan your Impatiens planting based on this frost date — see the calendar above for exact timing.

What planting zone is Ness County, KS?

Ness County, Kansas is in USDA Hardiness Zone 6a. The average last spring frost is April 21 and first fall frost is October 16.

When should I plant Impatiens in Ness County, KS?

In Ness County, KS, plant Impatiens after the last frost (around April 21) and before the first frost (around October 16). Best results when soil holds above 50°F.

What growing zone is Ness County, KS for Impatiens?

Ness County sits in USDA Zone 6a. Impatiens grows reliably in zones 2a through 11b, so it's a good fit here.

Can Impatiens grow in Ness County's climate?

Yes — Impatiens grows well in Ness County's temperate climate. Ness County averages a 178-day frost-free season, with last frost around April 21 and first frost around October 16.

🌱

Your Ness County Garden Planner — Free

A 22-page printable planner built for Ness County (Zone 6a). 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 Ness County, KS. Local conditions may vary. Last updated: June 2026.

Sources & credits

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