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When to Plant Chamomile in Kiowa County, OK

Chamomile is a daisy-like herb famous for its calming, apple-scented tea. German chamomile is an annual while Roman chamomile is a perennial ground cover.

Kiowa County, Oklahoma is in USDA Zone 7b. The average last spring frost is April 6 and the first fall frost is November 4, giving you a growing season of approximately 212 days.

At an elevation of 967 feet, Kiowa County receives approximately 21.8 inches of rainfall annually with predominantly loam soil. Summer highs average 92ยฐF, providing good warmth for Chamomile during the growing season.

Kiowa County, OK (Zone 7b) Long season
212 days
Last Spring Frost April 6
212 growing days
First Fall Frost November 4

Kiowa County Soil Profile

Soil Type

Loam

Soil pH

6.2-7.2

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (86 days to spare)
Start indoors: Feb 21 Transplant: Mar 21 🍅 Harvest: May 23 – Aug 1
Recommended (50%) ✓ Fits season (86 days to spare)
Start indoors: Mar 2 Transplant: Mar 30 🍅 Harvest: Jun 1 – Aug 10
Safe Start (90%) ✓ Fits season (92 days to spare)
Start indoors: Mar 11 Transplant: Apr 8 🍅 Harvest: Jun 10 – Aug 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 Kiowa County

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

Soil pH

Your soil pH (6.2โ€“7.2) is within Chamomile's preferred range (5.6โ€“7.5).

Soil Texture

The loam soil in Kiowa County is excellent for Chamomile โ€” good drainage, moisture retention, and nutrient holding capacity.

Drainage

Drainage is adequate for Chamomile.

Organic Matter

Organic matter is excellent (4.0%) โ€” Chamomile will thrive.

How to Plant Chamomile

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

Fall planting: Sow 10 weeks before your first frost date for a fall harvest.

Succession Planting Chamomile

4
successive plantings in your 212-day season

Sow every 6.9 weeks. Last sowing by Aug 06 to harvest before frost.

For a dedicated fall crop, sow by Aug 26.

Plant Water Budget

Plant needs
0.4″/week
Rainfall provides
0.4″/week
You supply
0.1″/week
Watering frequency Only during dry spells
Season total 200 gal / 100 sq ft
Drought risk

Water stress score is 6/10 โ€” consider drought-tolerant varieties and mulching

Monthly Watering Guide for Chamomile

Chamomile needs approximately 0.4 inches of water per week (1.7" per month). Here's how your county's rainfall compares month by month.

Month Chamomile Needs Rainfall You Supplement Action
Jan โ€” 0.5" 0" โ„๏ธ Dormant
Feb โ€” 0.7" 0" โ„๏ธ Dormant
Mar โ€” 1.5" 0" โ„๏ธ Dormant
Apr 1.7" 2" 0" โœ… Rainfall sufficient
May 1.7" 3" 0" โœ… Rainfall sufficient
Jun 1.7" 4" 0" โœ… Rainfall sufficient
Jul 1.7" 2.6" 0" โœ… Rainfall sufficient
Aug 1.7" 2.8" 0" โœ… Rainfall sufficient
Sep 1.7" 2" 0" โœ… Rainfall sufficient
Oct 1.7" 1.4" 0.3" ๐Ÿ’ง Light watering
Nov 1.7" 0.8" 0.9" ๐Ÿšฟ Regular watering
Dec โ€” 0.6" 0" โ„๏ธ Dormant

Water needs are for active growing months only (Aprโ€“Nov in Kiowa County). Supplement amounts are based on average rainfall โ€” actual needs vary with temperature, soil, and mulching.

Chamomile 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" โ€” every day above 50ยฐF 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.

Chamomile needs ~1,425 GDD — county provides 4,028 GDD Excellent fit

Chamomile Planting Timeline โ€” Kiowa County, OK

Chamomile Planting Calendar

Activity When Date Range
Start Indoors March 2 Mar 2 โ€“ Mar 16
Transplant Outdoors March 30 Mar 30 โ€“ Apr 13
Direct Sow March 23 Mar 23 โ€“ Apr 13
Harvest June 1 Jun 1 โ€“ Aug 10
Fall Sowing August 26 Aug 26 โ€“ Sep 9

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

Month-by-Month Timeline

MonthActivities
January โ€”
February โ€”
March Start Indoors Transplant Outdoors Direct Sow
April Transplant Outdoors Direct Sow
May โ€”
June Harvest
July Harvest
August Fall Sowing Harvest
September Fall Sowing
October โ€”
November โ€”
December โ€”

Growing Conditions

โ˜€๏ธ Sun

Full Sun (6-8+ hours)

๐Ÿ’ง Water

0.4"/week ยท Only during dry spells

๐Ÿ“… Days to Maturity

60โ€“90 days

๐Ÿงช Soil pH

Needs 5.6โ€“7.5 ยท Your soil: ideal

๐Ÿ—บ๏ธ USDA Zone

Zone 7b

๐Ÿ“† Growing Season

212 days in Kiowa County

Growing Tips for Chamomile in Kiowa County

Direct sow Chamomile outdoors after April 06 in Kiowa County when soil has warmed and frost danger has passed.

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

General growing tips

Direct sow on the soil surface as seeds need light. Harvest flowers when petals begin to curl back. Chamomile self-sows freely and improves the health of nearby plants.

Companion Planting

Good Companions

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Chamomile in Kiowa County, OK?

Kiowa County is in Zone 7b with an average last frost of April 6. Plan your Chamomile planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is Kiowa County, OK?

Kiowa County, Oklahoma is in USDA Hardiness Zone 7b. The average last spring frost is April 6 and first fall frost is November 4.

๐ŸŒฑ

Plan Your Garden with Confidence

Get our free Garden Planner โ€” designed to help Kiowa County gardeners in Zone 7b organize planting dates, track what's growing, and never miss a planting window.

Get Your Free Garden Planner →

Free download. Plan your entire garden season in minutes.

Data sources: USDA Plant Hardiness Zone Map (2023), NOAA 30-Year Climate Normals. Frost dates are based on 50% probability averages for Kiowa County, OK. Local conditions may vary. Last updated: April 2026.