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When to Plant Chamomile in Berks County, PA

Berks County, Pennsylvania Zone 7a May

Top priorities for Berks County, Pennsylvania gardeners in May

Your Berks County, Pennsylvania garden is entering a new phase. Here's what's on the schedule for May and why each task matters now.

Avg. last frost April 21
Avg. first frost October 24
Soil temp (4") 65°F
Watering Low
Pest pressure Low
Daylight 14.2 hrs
  1. Fire up the seed-starting tray: chamomile

    Bottom-water once the first true leaves appear — it keeps stems dry and knocks back damping-off.

To set up a strong June, finish these tasks
  • First harvests: chamomile

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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.

Berks County, Pennsylvania is in USDA Zone 7a. The average last spring frost is April 21 and the first fall frost is October 24, giving you a growing season of approximately 186 days.

At an elevation of 877 feet, Berks County receives approximately 46.2 inches of rainfall annually with predominantly silt loam soil. Summer highs average 85°F, providing good warmth for Chamomile during the growing season.

Berks County, PA (Zone 7a) Moderate season
186 days
Last Spring Frost April 21
186 growing days
First Fall Frost October 24

Berks County Soil Profile

Soil Type

Silt Loam

Soil pH

4.8-6.2

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (61 days to spare)
Start indoors: Mar 9 Transplant: Apr 6 🍅 Harvest: Jun 8 – Aug 17
Recommended (50%) ✓ Fits season (60 days to spare)
Start indoors: Mar 17 Transplant: Apr 14 🍅 Harvest: Jun 16 – Aug 25
Safe Start (90%) ✓ Fits season (51 days to spare)
Start indoors: Apr 5 Transplant: May 3 🍅 Harvest: Jul 5 – Sep 13

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 Berks County

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

Soil pH

Your soil pH (4.8–6.2) is more acidic than Chamomile prefers (5.6–7.5). Add garden lime to raise pH.

Soil Texture

The silt loam soil in Berks County is excellent for Chamomile — good drainage, moisture retention, and nutrient holding capacity.

Organic Matter

Organic matter is moderate (3.3%). 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

3
successive plantings in your 186-day season

Sow every 6.9 weeks. Last sowing by Jul 26 to harvest before frost.

For a dedicated fall crop, sow by Aug 15.

Plant Water Budget

Plant needs
0.4″/week
Rainfall provides
1.0″/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 2.8" 0" ❄️ Dormant
Feb 3.2" 0" ❄️ Dormant
Mar 4.1" 0" ❄️ Dormant
Apr 1.7" 4.1" 0" ✅ Rainfall sufficient
May 1.7" 4.5" 0" ✅ Rainfall sufficient
Jun 1.7" 4.1" 0" ✅ Rainfall sufficient
Jul 1.7" 4.2" 0" ✅ Rainfall sufficient
Aug 1.7" 4.3" 0" ✅ Rainfall sufficient
Sep 1.7" 4" 0" ✅ Rainfall sufficient
Oct 1.7" 3.8" 0" ✅ Rainfall sufficient
Nov 3.4" 0" ❄️ Dormant
Dec 3.6" 0" ❄️ Dormant

Water needs are for active growing months only (Apr–Oct in Berks County). Supplement amounts are based on average rainfall — 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" — 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.

Chamomile needs ~1,031 GDD — county provides 2,557 GDD Excellent fit

Chamomile Planting Timeline — Berks County, PA

Chamomile Planting Calendar

Activity When Date Range
Start Indoors March 17 Mar 17 – Mar 31
Transplant Outdoors April 14 Apr 14 – Apr 28
Direct Sow April 7 Apr 7 – Apr 28
Harvest June 16 Jun 16 – Aug 25
Fall Sowing August 15 Aug 15 – Aug 29

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

Month-by-Month Timeline

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

Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

0.4"/week · Natural rainfall sufficient

📅 Days to Maturity

60–90 days

🧪 Soil pH

Needs 5.6–7.5 · Your soil: too_acidic

🗺️ USDA Zone

Zone 7a

📆 Growing Season

186 days in Berks County

Growing Tips for Chamomile in Berks County

Direct sow Chamomile outdoors after April 21 in Berks 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 Berks County, PA?

Berks County is in Zone 7a with an average last frost of April 21. Plan your Chamomile planting based on this frost date — see the calendar above for exact timing.

What planting zone is Berks County, PA?

Berks County, Pennsylvania is in USDA Hardiness Zone 7a. The average last spring frost is April 21 and first fall frost is October 24.

🌱

Your Berks County Garden Planner — Free

A 24-page printable planner built for Berks County (Zone 7a). 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 Berks County, PA. 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.