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When to plant Marigolds in Kiowa County County,

Kiowa County County's climate puts the Marigolds spring window between April 15 and May 6. time plantings around the expected last-frost window for best survival.

When to Plant Marigolds in Kiowa County, KS

Kiowa County, Kansas Zone 6b June

Kiowa County, Kansas gardeners: here's your June plan

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

Avg. last frost April 15
Avg. first frost October 23
Soil temp (4") 74°F
Watering Low
Pest pressure High
Daylight 14.6 hrs
  1. Collect marigolds at their peak

    Don't tug. Use scissors or pruners for clean cuts — torn stems invite disease.

July will be here before you know it — start on
  • First harvests: marigolds

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Marigolds (Tagetes patula) are warm-season annuals beloved for their cheerful orange, yellow, and red blooms — and for their well-documented ability to repel pest nematodes in vegetable beds. Easy from seed, drought-tolerant once established, and bloom from early summer until the first hard frost.

Kiowa County, Kansas is in USDA Zone 6b. The average last spring frost is April 15 and the first fall frost is October 23, giving you a growing season of approximately 191 days.

At an elevation of 582 feet, Kiowa County receives approximately 25.6 inches of rainfall annually with predominantly loam soil. Summer highs average 91°F, providing good warmth for Marigolds during the growing season.

Annual Blooms in Multi-season Pollinator-friendly Deer-resistant Good for cutting Fragrant
Kiowa County, KS (Zone 6b) Moderate season
191 days
Last Spring Frost April 15
191 growing days
First Fall Frost October 23

Kiowa County Soil Profile

Soil Type

Loam

Soil pH

6.3-7.2

Drainage

Well Drained

Marigolds Planting Risk Windows

Early Start (70% safe) ✓ Fits season (34 days to spare)
Start indoors: Feb 26 Transplant: Apr 9 🌸 Bloom: Jun 4 – Sep 10
Recommended (50%) ✓ Fits season (37 days to spare)
Start indoors: Mar 4 Transplant: Apr 15 🌸 Bloom: Jun 10 – Sep 16
Safe Start (90%) ✓ Fits season (39 days to spare)
Start indoors: Mar 19 Transplant: Apr 30 🌸 Bloom: Jun 25 – Oct 1

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 Kiowa County

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

Soil pH

Your soil pH (6.3–7.2) is within Marigolds's preferred range (6.0–7.5).

Soil Texture

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

Drainage

Drainage is adequate for Marigolds.

Organic Matter

Organic matter is moderate (3.3%). Annual compost additions will help Marigolds.

How to Plant Marigolds

0.3"
Planting Depth
10"
Between Plants
12"
Between Rows

Succession Planting Marigolds

4
successive plantings in your 191-day season

Sow every 5.7 weeks. Last sowing by Aug 14 to harvest before frost.

Marigolds Water Budget

Plant needs
0.5″/week
Rainfall provides
0.6″/week
You supply
0.1″/week
Watering frequency Only during dry spells
Season total 178 gal / 100 sq ft
Drought risk

Water stress score is 8/10 — consider drought-tolerant varieties and mulching

Monthly Watering Guide for Marigolds

Marigolds 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 Marigolds Needs Rainfall You Supplement Action
Jan 0.6" 0" ❄️ Dormant
Feb 1" 0" ❄️ Dormant
Mar 1.6" 0" ❄️ Dormant
Apr 2.2" 2.5" 0" ✅ Rainfall sufficient
May 2.2" 3.8" 0" ✅ Rainfall sufficient
Jun 2.2" 4.3" 0" ✅ Rainfall sufficient
Jul 2.2" 3" 0" ✅ Rainfall sufficient
Aug 2.2" 3.3" 0" ✅ Rainfall sufficient
Sep 2.2" 2.4" 0" ✅ Rainfall sufficient
Oct 2.2" 1.5" 0.7" 💧 Light watering
Nov 1" 0" ❄️ Dormant
Dec 0.6" 0" ❄️ Dormant

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

Marigolds 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.

Marigolds needs ~1,095 GDD — county provides 3,485 GDD Excellent fit

Marigolds Planting Timeline — Kiowa County, KS

Marigolds Planting Calendar

Activity When Date Range
Start Indoors March 4 Mar 4 – Mar 18
Transplant Outdoors April 15 Apr 15 – Apr 29
Direct Sow April 15 Apr 15 – May 6
Bloom June 10 Jun 10 – Sep 16

Plant 0.3" deep · 10" apart · Rows 12" apart

Month-by-Month Timeline

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

Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

0.5"/week · Only during dry spells

📅 Days to Maturity

50–70 days

🧪 Soil pH

Needs 6–7.5 · Your soil: ideal

🗺️ USDA Zone

Zone 6b

📆 Growing Season

191 days in Kiowa County

Growing Tips for Marigolds in Kiowa County

Direct sow Marigolds outdoors after April 15 in Kiowa County when soil has warmed and frost danger has passed.

Common pests for Marigolds in this region include aphids and slugs. Use row covers early in the season and inspect plants weekly.

General growing tips

Direct-sow after last frost or start indoors 4-6 weeks earlier. Deadhead spent blooms to keep new flowers coming. French marigolds (T. patula) are the most reliable nematode repellents — plant a band around vegetable beds. Tolerate poor soil but bloom best with monthly compost.

Companion Planting

Good Companions

Avoid Planting Near

  • Beans
  • Cabbage

Check more plant combinations with our Companion Planting Checker →

🌾 Save Your Own Marigolds Seeds
Life Cycle Annual
Pollination Self-Pollinating
How to Collect Let flower heads dry on plant. Pull dried petals to reveal seeds.
Storage Store in envelopes; viable 3 years at 35°F, under 50% humidity.

Very easy to save. Seeds are the long, thin, dark pieces inside the dried flower head.

Frequently Asked Questions

When should I plant Marigolds in Kiowa County, KS?

Kiowa County is in Zone 6b with an average last frost of April 15. Plan your Marigolds planting based on this frost date — see the calendar above for exact timing.

What planting zone is Kiowa County, KS?

Kiowa County, Kansas is in USDA Hardiness Zone 6b. The average last spring frost is April 15 and first fall frost is October 23.

When should I plant Marigolds in Kiowa County County, ?

In Kiowa County County, , plant Marigolds after the last frost (around April 15) and before the first frost (around October 23). Best results when soil holds above 50°F.

What growing zone is Kiowa County County, for Marigolds?

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

Can Marigolds grow in Kiowa County County's climate?

Yes — Marigolds grows well in Kiowa County County's temperate climate. Kiowa County County averages a 191-day frost-free season, with last frost around April 15 and first frost around October 23.

🌱

Your Kiowa County Garden Planner — Free

A 22-page printable planner built for Kiowa County (Zone 6b). 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 Kiowa County, KS. 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.