When to plant Mint in Dearborn County, IN
Plant Mint in Dearborn County during the brief April 23–May 7 window. With 187 frost-free days, fall plantings can't mature before October 20.
When to Plant Mint in Dearborn County, IN
Mint is a vigorous perennial herb with refreshing, aromatic leaves used in teas, cocktails, and cooking. It spreads aggressively by underground runners.
Dearborn County, Indiana is in USDA Zone 6b. The average last spring frost is April 16 and the first fall frost is October 20, giving you a growing season of approximately 187 days.
At an elevation of 1,290 feet, Dearborn County receives approximately 32.4 inches of rainfall annually with predominantly silt loam soil. Summer highs average 85°F, providing good warmth for Mint during the growing season.
Dearborn County Soil Profile
Soil Type
Silt Loam
Soil pH
6.0-7.0
Drainage
Well Drained
Mint Planting Timeline — Dearborn County, IN
Mint Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Transplant Outdoors | April 23 | Apr 23 – May 7 |
| Harvest | June 25 | Jun 25 – Sep 3 |
Plant 0.5" deep · 8" apart · Rows 12" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | — |
| February | — |
| March | — |
| April | Transplant Outdoors |
| May | Transplant Outdoors |
| June | Harvest |
| July | Harvest |
| August | Harvest |
| September | Harvest |
| October | — |
| November | — |
| December | — |
Growing Conditions
☀️ Sun
Partial Shade (3-6 hours)
💧 Water
High — keep soil consistently moist
📅 Days to Maturity
60–90 days
🧪 Soil pH
Needs 6–7 · Your soil: N/A
🗺️ USDA Zone
Zone 6b
📆 Growing Season
187 days in Dearborn County
Growing Tips for Dearborn County
Always grow mint in containers or with underground barriers to control spreading. Harvest regularly to keep plants compact. Cut plants back in late summer for a fresh fall flush.
Companion Planting
Good Companions
Avoid Planting Near
Check more plant combinations with our Companion Planting Checker →
Mint in Other Locations
Frequently Asked Questions
When should I plant Mint in Dearborn County, IN?
Dearborn County is in Zone 6b with an average last frost of April 16. Plan your Mint planting based on this frost date — see the calendar above for exact timing.
What planting zone is Dearborn County, IN?
Dearborn County, Indiana is in USDA Hardiness Zone 6b. The average last spring frost is April 16 and first fall frost is October 20.
When should I plant Mint in Dearborn County, IN?
In Dearborn County, IN, plant Mint after the last frost (around April 16) and before the first frost (around October 20). Best results when soil holds above 50°F.
What growing zone is Dearborn County, IN for Mint?
Dearborn County sits in USDA Zone 6b. Mint grows reliably in zones 3a through 10b, so it's a good fit here.
Can Mint grow in Dearborn County's climate?
Yes — Mint grows well in Dearborn County's temperate climate. Dearborn County averages a 187-day frost-free season, with last frost around April 16 and first frost around October 20.
Your Dearborn County Garden Planner — Free
A 22-page printable planner built for Dearborn 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.