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When to Plant Chamomile in Mills County, TX

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.

Mills County, Texas is in USDA Zone 8a. The average last spring frost is March 23 and the first fall frost is November 12, giving you a growing season of approximately 234 days.

At an elevation of 4,208 feet, Mills County receives approximately 61.7 inches of rainfall annually with predominantly loam soil. Summer highs average 90ยฐF, providing good warmth for Chamomile during the growing season. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Chamomile root diseases.

Mills County, TX (Zone 8a) Long season
234 days
Last Spring Frost March 23
234 growing days
First Fall Frost November 12

Mills County Soil Profile

Soil Type

Loam

Soil pH

6.7-7.6

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (111 days to spare)
Start indoors: Feb 5 Transplant: Mar 5 🍅 Harvest: May 7 – Jul 16
Recommended (50%) ✓ Fits season (108 days to spare)
Start indoors: Feb 16 Transplant: Mar 16 🍅 Harvest: May 18 – Jul 27
Safe Start (90%) ✓ Fits season (105 days to spare)
Start indoors: Mar 10 Transplant: Apr 7 🍅 Harvest: Jun 9 – Aug 18

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 Mills County

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

Soil pH

Your soil pH (6.7โ€“7.6) overlaps with Chamomile's range (5.6โ€“7.5), though not a perfect match.

Soil Texture

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

Organic Matter

Organic matter is moderate (2.2%). 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 234-day season

Sow every 6.9 weeks. Last sowing by Aug 14 to harvest before frost.

For a dedicated fall crop, sow by Sep 03.

Plant Water Budget

Plant needs
0.4″/week
Rainfall provides
1.1″/week
Watering frequency Natural rainfall sufficient
Season total 0 gal / 100 sq ft

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€” 1.7" 0" โ„๏ธ Dormant
Feb โ€” 2.4" 0" โ„๏ธ Dormant
Mar 1.7" 3.8" 0" โœ… Rainfall sufficient
Apr 1.7" 6.2" 0" โœ… Rainfall sufficient
May 1.7" 10.5" 0" โœ… Rainfall sufficient
Jun 1.7" 9.5" 0" โœ… Rainfall sufficient
Jul 1.7" 7.5" 0" โœ… Rainfall sufficient
Aug 1.7" 7" 0" โœ… Rainfall sufficient
Sep 1.7" 5.6" 0" โœ… Rainfall sufficient
Oct 1.7" 4.2" 0" โœ… Rainfall sufficient
Nov 1.7" 2" 0" โœ… Rainfall sufficient
Dec โ€” 1.4" 0" โ„๏ธ Dormant

Water needs are for active growing months only (Marโ€“Nov in Mills 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 ~1,312 GDD — county provides 4,095 GDD Excellent fit

Chamomile Planting Timeline โ€” Mills County, TX

Chamomile Planting Calendar

Activity When Date Range
Start Indoors February 16 Feb 16 โ€“ Mar 2
Transplant Outdoors March 16 Mar 16 โ€“ Mar 30
Direct Sow March 9 Mar 9 โ€“ Mar 30
Harvest May 18 May 18 โ€“ Jul 27
Fall Sowing September 3 Sep 3 โ€“ Sep 17

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

Month-by-Month Timeline

MonthActivities
January โ€”
February Start Indoors
March Start Indoors Transplant Outdoors Direct Sow
April โ€”
May Harvest
June Harvest
July Harvest
August โ€”
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: acceptable

๐Ÿ—บ๏ธ USDA Zone

Zone 8a

๐Ÿ“† Growing Season

234 days in Mills County

Growing Tips for Chamomile in Mills County

Direct sow Chamomile outdoors after March 23 in Mills 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.

With 62" of annual rainfall in Mills County, ensure good drainage for Chamomile โ€” excess moisture can promote root rot and fungal diseases.

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 Mills County, TX?

Mills County is in Zone 8a with an average last frost of March 23. Plan your Chamomile planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is Mills County, TX?

Mills County, Texas is in USDA Hardiness Zone 8a. The average last spring frost is March 23 and first fall frost is November 12.

๐ŸŒฑ

Plan Your Garden with Confidence

Get our free Garden Planner โ€” designed to help Mills County gardeners in Zone 8a organize planting dates, track what's growing, and never miss a planting window.

Get Your Free Garden Planner →

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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 Mills County, TX. Local conditions may vary. Last updated: April 2026.