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When to plant Thyme in Wayne County County,

Plant Thyme in Wayne County County during the brief April 15–April 29 window. With 202 frost-free days, fall plantings can't mature before October 27.

When to Plant Thyme in Wayne County, IL

Thyme
Wayne County, Illinois Zone 6b June

Your June planting checklist for Wayne County, Illinois

June is a pivotal month for Wayne County, Illinois gardens. Focus on these tasks first and you'll set up the rest of the season for success.

Avg. last frost April 8
Avg. first frost October 27
Soil temp (4") 75°F
Watering Low
Pest pressure High
Daylight 14.7 hrs
  1. Basket week: thyme

    This is the payoff month. Bring a basket, bring a friend, and get into the beds.

A few tasks this June that'll pay off in July
  • First harvests: thyme

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Thyme is a low-growing perennial herb with tiny, aromatic leaves and a warm, earthy flavor. It is one of the most versatile culinary and medicinal herbs.

Wayne County, Illinois is in USDA Zone 6b. The average last spring frost is April 8 and the first fall frost is October 27, giving you a growing season of approximately 202 days.

At an elevation of 924 feet, Wayne County receives approximately 35.7 inches of rainfall annually with predominantly silt loam soil. Summer highs average 85°F, providing good warmth for Thyme during the growing season.

Wayne County, IL (Zone 6b) Long season
202 days
Last Spring Frost April 8
202 growing days
First Fall Frost October 27
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Wayne County Soil Profile

Soil Type

Silt Loam

Soil pH

5.8-6.9

Drainage

Well Drained

Thyme Planting Risk Windows

Early Start (70% safe) ✓ Fits season (61 days to spare)
Transplant: Apr 9 🍅 Harvest: Jun 18 – Aug 20
Recommended (50%) ✓ Fits season (62 days to spare)
Transplant: Apr 15 🍅 Harvest: Jun 24 – Aug 26
Safe Start (90%) ✓ Fits season (68 days to spare)
Transplant: Apr 27 🍅 Harvest: Jul 6 – Sep 7

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 Wayne County

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

Soil pH

Your soil pH (5.8–6.9) overlaps with Thyme's range (6.0–8.0), though not a perfect match.

Soil Texture

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

Organic Matter

Organic matter is excellent (4.9%) — Thyme will thrive.

How to Plant Thyme

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

Succession Planting Thyme

3
successive plantings in your 202-day season

Sow every 8 weeks. Last sowing by Jul 29 to harvest before frost.

Thyme Water Budget

Plant needs
0.3″/week
Rainfall provides
0.7″/week
Watering frequency Natural rainfall sufficient
Season total 0 gal / 100 sq ft
Drought risk

Water stress score is 6/10 — consider drought-tolerant varieties and mulching

Monthly Watering Guide for Thyme

Thyme needs approximately 0.3 inches of water per week (1.3" per month). Here's how your county's rainfall compares month by month.

Month Thyme Needs Rainfall You Supplement Action
Jan 1.3" 0" ❄️ Dormant
Feb 1.6" 0" ❄️ Dormant
Mar 2.2" 0" ❄️ Dormant
Apr 1.3" 3.3" 0" ✅ Rainfall sufficient
May 1.3" 4.3" 0" ✅ Rainfall sufficient
Jun 1.3" 4.6" 0" ✅ Rainfall sufficient
Jul 1.3" 4.4" 0" ✅ Rainfall sufficient
Aug 1.3" 3.9" 0" ✅ Rainfall sufficient
Sep 1.3" 3.1" 0" ✅ Rainfall sufficient
Oct 1.3" 3" 0" ✅ Rainfall sufficient
Nov 2.1" 0" ❄️ Dormant
Dec 1.9" 0" ❄️ Dormant

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

Thyme 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.

Thyme needs ~1,100 GDD — county provides 2,777 GDD Excellent fit

Thyme Planting Timeline — Wayne County, IL

Thyme Planting Calendar

Activity When Date Range
Transplant Outdoors April 15 Apr 15 – Apr 29
Harvest June 24 Jun 24 – Aug 26

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

Month-by-Month Timeline

MonthActivities
January
February
March
April Transplant Outdoors
May
June Harvest
July Harvest
August Harvest
September
October
November
December
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Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

0.3"/week · Natural rainfall sufficient

📅 Days to Maturity

70–90 days

🧪 Soil pH

Needs 6–8 · Your soil: acceptable

🗺️ USDA Zone

Zone 6b

📆 Growing Season

202 days in Wayne County

Growing Tips for Thyme in Wayne County

Direct sow Thyme outdoors after April 08 in Wayne County when soil has warmed and frost danger has passed.

General growing tips

Start from seed, cuttings, or divisions. Plant in well-drained, lean soil. Prune lightly after flowering. Replace plants every 3-4 years when they become woody.

Companion Planting

Good Companions

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Thyme in Wayne County, IL?

Wayne County is in Zone 6b with an average last frost of April 8. Plan your Thyme planting based on this frost date — see the calendar above for exact timing.

What planting zone is Wayne County, IL?

Wayne County, Illinois is in USDA Hardiness Zone 6b. The average last spring frost is April 8 and first fall frost is October 27.

When should I plant Thyme in Wayne County County, ?

In Wayne County County, , plant Thyme after the last frost (around April 8) and before the first frost (around October 27). Best results when soil holds above 50°F.

What growing zone is Wayne County County, for Thyme?

Wayne County County sits in USDA Zone 6b. Thyme grows reliably in zones 4a through 9b, so it's a good fit here.

Can Thyme grow in Wayne County County's climate?

Yes — Thyme grows well in Wayne County County's temperate climate. Wayne County County averages a 202-day frost-free season, with last frost around April 8 and first frost around October 27.

🌱

Your Wayne County Garden Planner — Free

A 22-page printable planner built for Wayne 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 Wayne County, IL. 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.