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When to Plant Chamomile in Custer 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.

Custer County, Oklahoma is in USDA Zone 7a. The average last spring frost is April 8 and the first fall frost is October 31, giving you a growing season of approximately 206 days.

At an elevation of 767 feet, Custer County receives approximately 31.6 inches of rainfall annually with predominantly loam soil. Summer highs average 89ยฐF, providing good warmth for Chamomile during the growing season.

Custer County, OK (Zone 7a) Long season
206 days
Last Spring Frost April 8
206 growing days
First Fall Frost October 31

Custer County Soil Profile

Soil Type

Loam

Soil pH

6.5-7.2

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (78 days to spare)
Start indoors: Feb 27 Transplant: Mar 27 🍅 Harvest: May 29 – Aug 7
Recommended (50%) ✓ Fits season (80 days to spare)
Start indoors: Mar 4 Transplant: Apr 1 🍅 Harvest: Jun 3 – Aug 12
Safe Start (90%) ✓ Fits season (86 days to spare)
Start indoors: Mar 14 Transplant: Apr 11 🍅 Harvest: Jun 13 – Aug 22

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 Custer County

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

Soil pH

Your soil pH (6.5โ€“7.2) is within Chamomile's preferred range (5.6โ€“7.5).

Soil Texture

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

Organic Matter

Organic matter is moderate (3.7%). Annual compost additions will help Chamomile.

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 206-day season

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

For a dedicated fall crop, sow by Aug 22.

Plant Water Budget

Plant needs
0.4″/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 โ€” consider drought-tolerant varieties and mulching

Chamomile needs ~1,256 GDD — county provides 3,450 GDD Excellent fit

Chamomile Planting Timeline โ€” Custer County, OK

Chamomile Planting Calendar

Activity When Date Range
Start Indoors March 4 Mar 4 โ€“ Mar 18
Transplant Outdoors April 1 Apr 1 โ€“ Apr 15
Direct Sow March 25 Mar 25 โ€“ Apr 15
Fall Sowing August 22 Aug 22 โ€“ Sep 5
Harvest June 3 Jun 3 โ€“ Aug 12

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

Month-by-Month Timeline

MonthActivities
January โ€”
February โ€”
March Start Indoors 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 Natural rainfall sufficient

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 7a

๐Ÿ“† Growing Season

206 days in Custer County

Growing Tips for Chamomile in Custer County

Direct sow Chamomile outdoors after April 08 in Custer 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

Level Up Your Garden

Frequently Asked Questions

When should I plant Chamomile in Custer County, OK?

Custer County is in Zone 7a with an average last frost of April 8. Plan your Chamomile planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is Custer County, OK?

Custer County, Oklahoma is in USDA Hardiness Zone 7a. The average last spring frost is April 8 and first fall frost is October 31.

๐ŸŒฑ

Plan Your Garden with Confidence

Get our free Garden Planner โ€” designed to help Custer County gardeners in Zone 7a 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 Custer County, OK. Local conditions may vary. Last updated: April 2026.