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When to Plant Lavender in Kearny County, KS

Kearny County, Kansas Zone 6a May

What to do in May

A quick May briefing for Kearny County, Kansas gardeners — what's urgent, what's next, and what can wait.

Avg. last frost April 26
Avg. first frost October 16
Soil temp (4") 62°F
Watering High
Pest pressure Low
Daylight 14.1 hrs
  1. Move lavender from tray to bed

    Plant tomatoes deep — bury the stem up to the first true leaves to grow extra roots. Everything else goes in at the same depth it grew in the tray.

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Lavender is a fragrant perennial herb with silvery foliage and purple flower spikes. It is prized for its essential oils, culinary uses, and ornamental beauty.

Kearny County, Kansas is in USDA Zone 6a. The average last spring frost is April 26 and the first fall frost is October 16, giving you a growing season of approximately 173 days.

At an elevation of 720 feet, Kearny County receives approximately 22.9 inches of rainfall annually with predominantly loam soil. Summer highs average 91°F, providing good warmth for Lavender during the growing season.

Kearny County, KS (Zone 6a) Moderate season
173 days
Last Spring Frost April 26
173 growing days
First Fall Frost October 16
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Kearny County Soil Profile

Soil Type

Loam

Soil pH

6.7-7.8

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✗ May not fit
Transplant: Apr 24 🍅 Harvest: Jul 24 – Nov 6
Recommended (50%) ✗ May not fit
Transplant: May 3 🍅 Harvest: Aug 2 – Nov 15
Safe Start (90%) ✗ May not fit
Transplant: May 17 🍅 Harvest: Aug 16 – Nov 29

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 Kearny County

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

Soil pH

Your soil pH (6.7–7.8) is within Lavender's preferred range (6.5–8.0).

Soil Texture

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

Organic Matter

Organic matter is excellent (4.2%) — Lavender will thrive.

How to Plant Lavender

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

Plant Water Budget

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

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

Monthly Watering Guide for Lavender

Lavender needs approximately 0.3 inches of water per week (1.3" per month). Here's how your county's rainfall compares month by month.

Month Lavender Needs Rainfall You Supplement Action
Jan 1.8" 0" ❄️ Dormant
Feb 1.4" 0" ❄️ Dormant
Mar 1.8" 0" ❄️ Dormant
Apr 1.3" 2.5" 0" ✅ Rainfall sufficient
May 1.3" 2.5" 0" ✅ Rainfall sufficient
Jun 1.3" 1.6" 0" ✅ Rainfall sufficient
Jul 1.3" 2.2" 0" ✅ Rainfall sufficient
Aug 1.3" 2.5" 0" ✅ Rainfall sufficient
Sep 1.3" 1.9" 0" ✅ Rainfall sufficient
Oct 1.3" 1.8" 0" ✅ Rainfall sufficient
Nov 1.7" 0" ❄️ Dormant
Dec 1.2" 0" ❄️ Dormant

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

Lavender 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.

Lavender needs ~2,646 GDD — county provides 3,157 GDD Good fit

Lavender Planting Timeline — Kearny County, KS

Lavender Planting Calendar

Activity When Date Range
Transplant Outdoors May 3 May 3 – May 17
Harvest August 2 Aug 2 – Nov 15

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

Month-by-Month Timeline

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

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

0.3"/week · Natural rainfall sufficient

📅 Days to Maturity

90–200 days

🧪 Soil pH

Needs 6.5–8 · Your soil: ideal

🗺️ USDA Zone

Zone 6a

📆 Growing Season

173 days in Kearny County

Growing Tips for Lavender in Kearny County

Direct sow Lavender outdoors after April 26 in Kearny County when soil has warmed and frost danger has passed.

Your 173.0-day growing season in Kearny County is tight for Lavender (90.0-200.0 days to maturity). Start indoors and choose early-maturing varieties.

General growing tips

Plant in well-drained, sandy soil. Avoid heavy mulching around the crown. Prune after flowering but do not cut into old wood. Lavender resents wet winter conditions.

Companion Planting

Good Companions

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Lavender in Kearny County, KS?

Kearny County is in Zone 6a with an average last frost of April 26. Plan your Lavender planting based on this frost date — see the calendar above for exact timing.

What planting zone is Kearny County, KS?

Kearny County, Kansas is in USDA Hardiness Zone 6a. The average last spring frost is April 26 and first fall frost is October 16.

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Your Kearny County Garden Planner — Free

A 24-page printable planner built for Kearny 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 Kearny County, KS. Local conditions may vary. Last updated: May 2026.

Sources & credits

Every number on this page traces back to a primary horticulture or government data source. Click through to verify.