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When to plant Thai Basil in Oregon County, MO

Oregon County sits in USDA Zone 7a. Plant Thai Basil between April 8 (after last frost on April 1) and April 29.

When to Plant Thai Basil in Oregon County, MO

Thai basil has a distinctive anise-licorice flavor with sturdy purple stems and small leaves. It is essential in Thai, Vietnamese, and other Southeast Asian cuisines.

Oregon County, Missouri is in USDA Zone 7a. The average last spring frost is April 1 and the first fall frost is October 27, giving you a growing season of approximately 209 days.

At an elevation of 1,372 feet, Oregon County receives approximately 30.7 inches of rainfall annually with predominantly silt loam soil. Summer highs average 90°F, providing good warmth for Thai Basil during the growing season.

Oregon County, MO (Zone 7a) Long season
209 days
Last Spring Frost April 1
209 growing days
First Fall Frost October 27

Oregon County Soil Profile

Soil Type

Silt Loam

Soil pH

6.0-7.0

Drainage

Well Drained

Thai Basil Planting Timeline — Oregon County, MO

Thai Basil Planting Calendar

Activity When Date Range
Start Indoors February 11 Feb 11 – Feb 25
Transplant Outdoors April 15 Apr 15 – Apr 29
Direct Sow April 8 Apr 8 – Apr 29
Harvest June 10 Jun 10 – Aug 12

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

Month-by-Month Timeline

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

Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

Moderate — regular watering

📅 Days to Maturity

50–75 days

🧪 Soil pH

Needs 6–7 · Your soil: N/A

🗺️ USDA Zone

Zone 7a

📆 Growing Season

209 days in Oregon County

Growing Tips for Oregon County

Start seeds indoors or direct sow after last frost. Thai basil holds up better to heat in cooking than sweet basil. Pinch flowers to prolong leaf production.

Companion Planting

Good Companions

Avoid Planting Near

  • Rue
  • Sage

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Thai Basil in Oregon County, MO?

Oregon County is in Zone 7a with an average last frost of April 1. Plan your Thai Basil planting based on this frost date — see the calendar above for exact timing.

What planting zone is Oregon County, MO?

Oregon County, Missouri is in USDA Hardiness Zone 7a. The average last spring frost is April 1 and first fall frost is October 27.

When should I plant Thai Basil in Oregon County, MO?

In Oregon County, MO, plant Thai Basil after the last frost (around April 1) and before the first frost (around October 27). Best results when soil holds above 50°F.

What growing zone is Oregon County, MO for Thai Basil?

Oregon County sits in USDA Zone 7a. Thai Basil grows reliably in zones 4a through 11b, so it's a good fit here.

Can Thai Basil grow in Oregon County's climate?

Yes — Thai Basil grows well in Oregon County's temperate climate. Oregon County averages a 209-day frost-free season, with last frost around April 1 and first frost around October 27.

🌱

Your Oregon County Garden Planner — Free

A 22-page printable planner built for Oregon 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 Oregon County, MO. Local conditions may vary. Last updated: June 2026.

Sources & credits

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