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When to Plant Oregano in Morgan County, IN

Oregano is a robust perennial herb essential to Italian and Greek cuisine. Its pungent, savory leaves intensify in flavor when dried.

Morgan County, Indiana is in USDA Zone 6a. The average last spring frost is April 12 and the first fall frost is October 20, giving you a growing season of approximately 191 days.

At an elevation of 839 feet, Morgan County receives approximately 31.5 inches of rainfall annually with predominantly silt loam soil. Summer highs average 87ยฐF, providing good warmth for Oregano during the growing season.

Morgan County, IN (Zone 6a) Moderate season
191 days
Last Spring Frost April 12
191 growing days
First Fall Frost October 20

Morgan County Soil Profile

Soil Type

Silt Loam

Soil pH

5.8-6.8

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (52 days to spare)
Transplant: Apr 15 🍅 Harvest: Jun 17 – Aug 26
Recommended (50%) ✓ Fits season (51 days to spare)
Transplant: Apr 19 🍅 Harvest: Jun 21 – Aug 30
Safe Start (90%) ✓ Fits season (43 days to spare)
Transplant: May 8 🍅 Harvest: Jul 10 – Sep 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.

Plant Water Budget

Plant needs
0.5″/week
Rainfall provides
0.7″/week
Watering frequency Natural rainfall sufficient
Season total 0 gal / 100 sq ft
Oregano needs ~1,144 GDD — county provides 2,912 GDD Excellent fit

Oregano Planting Timeline โ€” Morgan County, IN

Oregano Planting Calendar

Activity When Date Range
Transplant Outdoors April 19 Apr 19 โ€“ May 3
Harvest June 21 Jun 21 โ€“ Aug 30

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

Month-by-Month Timeline

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

Growing Conditions

Sun

Full Sun (6-8+ hours)

Water

Low โ€” drought tolerant

Days to Maturity

60โ€“90 days

Soil pH

6 โ€“ 8

USDA Zone

Zone 6a

Growing Season

191 days

Growing Tips for Morgan County

Start from seed, cuttings, or divisions. Harvest just before flowering for strongest flavor. Cut plants back to a few inches in spring to encourage vigorous new growth.

Companion Planting

Good Companions

Level Up Your Garden

Frequently Asked Questions

When should I plant Oregano in Morgan County, IN?

Morgan County is in Zone 6a with an average last frost of April 12. Plan your Oregano planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is Morgan County, IN?

Morgan County, Indiana is in USDA Hardiness Zone 6a. The average last spring frost is April 12 and first fall frost is October 20.

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Plan Your Garden with Confidence

Get our free Garden Planner โ€” designed to help Morgan County gardeners in Zone 6a organize planting dates, track what's growing, and never miss a planting window.

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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 Morgan County, IN. Local conditions may vary. Last updated: April 2026.