When to plant Thai Basil in Grant County, IN
Grant County sits in USDA Zone 6a. Plant Thai Basil between May 2 (after last frost on April 25) and May 23.
When to Plant Thai Basil in Grant County, IN
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.
Grant County, Indiana is in USDA Zone 6a. The average last spring frost is April 25 and the first fall frost is October 17, giving you a growing season of approximately 175 days.
At an elevation of 682 feet, Grant County receives approximately 40.4 inches of rainfall annually with predominantly silt loam soil. Summer highs average 85°F, providing good warmth for Thai Basil during the growing season.
Grant County Soil Profile
Soil Type
Silt Loam
Soil pH
6.0-7.0
Drainage
Well Drained
Thai Basil Planting Timeline — Grant County, IN
Thai Basil Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Start Indoors | March 7 | Mar 7 – Mar 21 |
| Transplant Outdoors | May 9 | May 9 – May 23 |
| Direct Sow | May 2 | May 2 – May 23 |
| Harvest | July 4 | Jul 4 – Sep 5 |
Plant 0.5" deep · 8" apart · Rows 12" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | — |
| February | — |
| March | Start Indoors |
| April | — |
| May | Transplant Outdoors Direct Sow |
| June | — |
| July | Harvest |
| August | Harvest |
| September | Harvest |
| 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 6a
📆 Growing Season
175 days in Grant County
Growing Tips for Grant 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
Check more plant combinations with our Companion Planting Checker →
Thai Basil in Other Locations
Frequently Asked Questions
When should I plant Thai Basil in Grant County, IN?
Grant County is in Zone 6a with an average last frost of April 25. Plan your Thai Basil planting based on this frost date — see the calendar above for exact timing.
What planting zone is Grant County, IN?
Grant County, Indiana is in USDA Hardiness Zone 6a. The average last spring frost is April 25 and first fall frost is October 17.
When should I plant Thai Basil in Grant County, IN?
In Grant County, IN, plant Thai Basil after the last frost (around April 25) and before the first frost (around October 17). Best results when soil holds above 50°F.
What growing zone is Grant County, IN for Thai Basil?
Grant County sits in USDA Zone 6a. Thai Basil grows reliably in zones 4a through 11b, so it's a good fit here.
Can Thai Basil grow in Grant County's climate?
Yes — Thai Basil grows well in Grant County's temperate climate. Grant County averages a 175-day frost-free season, with last frost around April 25 and first frost around October 17.
Your Grant County Garden Planner — Free
A 22-page printable planner built for Grant County (Zone 6a). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.