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When to plant Lemon Thyme in Ringgold County, IA

Plant Lemon Thyme in Ringgold County during the brief April 30–May 14 window. With 171 frost-free days, fall plantings can't mature before October 11.

When to Plant Lemon Thyme in Ringgold County, IA

Lemon thyme is a low-growing perennial herb with tiny, citrus-scented leaves. It combines the savory quality of thyme with a bright lemon flavor, excellent with fish and poultry.

Ringgold County, Iowa is in USDA Zone 5b. The average last spring frost is April 23 and the first fall frost is October 11, giving you a growing season of approximately 171 days.

At an elevation of 1,349 feet, Ringgold County receives approximately 40.7 inches of rainfall annually with predominantly silt loam soil. Summer highs average 85°F, providing good warmth for Lemon Thyme during the growing season.

Ringgold County, IA (Zone 5b) Moderate season
171 days
Last Spring Frost April 23
171 growing days
First Fall Frost October 11

Ringgold County Soil Profile

Soil Type

Silt Loam

Soil pH

6.0-7.0

Drainage

Well Drained

Lemon Thyme Planting Timeline — Ringgold County, IA

Lemon Thyme Planting Calendar

Activity When Date Range
Transplant Outdoors April 30 Apr 30 – May 14
Harvest July 9 Jul 9 – Sep 10

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

Month-by-Month Timeline

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

Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

Low — drought tolerant

📅 Days to Maturity

70–90 days

🧪 Soil pH

Needs 6–8 · Your soil: N/A

🗺️ USDA Zone

Zone 5b

📆 Growing Season

171 days in Ringgold County

Growing Tips for Ringgold County

Start from cuttings or divisions. Plant in well-drained soil. Trim back after flowering. Use as a fragrant ground cover or edging plant along garden paths.

Companion Planting

Good Companions

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Lemon Thyme in Ringgold County, IA?

Ringgold County is in Zone 5b with an average last frost of April 23. Plan your Lemon Thyme planting based on this frost date — see the calendar above for exact timing.

What planting zone is Ringgold County, IA?

Ringgold County, Iowa is in USDA Hardiness Zone 5b. The average last spring frost is April 23 and first fall frost is October 11.

When should I plant Lemon Thyme in Ringgold County, IA?

In Ringgold County, IA, plant Lemon Thyme after the last frost (around April 23) and before the first frost (around October 11). Best results when soil holds above 50°F.

What growing zone is Ringgold County, IA for Lemon Thyme?

Ringgold County sits in USDA Zone 5b. Lemon Thyme grows reliably in zones 5a through 9b, so it's a good fit here.

Can Lemon Thyme grow in Ringgold County's climate?

Yes — Lemon Thyme grows well in Ringgold County's temperate climate. Ringgold County averages a 171-day frost-free season, with last frost around April 23 and first frost around October 11.

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Your Ringgold County Garden Planner — Free

A 22-page printable planner built for Ringgold County (Zone 5b). 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 Ringgold County, IA. Local conditions may vary. Last updated: June 2026.

Sources & credits

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