When to plant Onion in Warrick County, IN
Spring Onion in Warrick County goes in March 23–April 13, once nighttime temps stop dipping near freezing. A second sowing from August 19 to September 2 extends the harvest into fall.
When to Plant Onion in Warrick County, IN
Onions are a fundamental kitchen staple available in yellow, white, and red varieties. Choose long-day, short-day, or intermediate types based on your latitude.
Warrick County, Indiana is in USDA Zone 7a. The average last spring frost is April 6 and the first fall frost is October 28, giving you a growing season of approximately 205 days.
At an elevation of 967 feet, Warrick County receives approximately 36.4 inches of rainfall annually with predominantly silt loam soil. Summer highs average 86°F, providing good warmth for Onion during the growing season.
Warrick County Soil Profile
Soil Type
Silt Loam
Soil pH
6.0-7.0
Drainage
Well Drained
Onion Planting Timeline — Warrick County, IN
Onion Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Start Indoors | March 2 | Mar 2 – Mar 16 |
| Transplant Outdoors | April 6 | Apr 6 – Apr 20 |
| Direct Sow | March 23 | Mar 23 – Apr 13 |
| Harvest | July 6 | Jul 6 – Aug 24 |
| Fall Sowing | August 19 | Aug 19 – Sep 2 |
Plant 1" deep · 6" apart · Rows 12" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | — |
| February | — |
| March | Start Indoors Direct Sow |
| April | Transplant Outdoors Direct Sow |
| May | — |
| June | — |
| July | Harvest |
| August | Fall Sowing Harvest |
| September | Fall Sowing |
| October | — |
| November | — |
| December | — |
Growing Conditions
☀️ Sun
Full Sun (6-8+ hours)
💧 Water
Moderate — regular watering
📅 Days to Maturity
90–120 days
🧪 Soil pH
Needs 6–7 · Your soil: N/A
🗺️ USDA Zone
Zone 7a
📆 Growing Season
205 days in Warrick County
Growing Tips for Warrick County
Start seeds indoors 8-10 weeks before transplanting. Match day-length type to your latitude. Stop watering when tops begin to fall over and cure bulbs for 2-3 weeks before storage.
Companion Planting
Good Companions
Avoid Planting Near
Check more plant combinations with our Companion Planting Checker →
Onion in Other Locations
Frequently Asked Questions
When should I plant Onion in Warrick County, IN?
Warrick County is in Zone 7a with an average last frost of April 6. Plan your Onion planting based on this frost date — see the calendar above for exact timing.
What planting zone is Warrick County, IN?
Warrick County, Indiana is in USDA Hardiness Zone 7a. The average last spring frost is April 6 and first fall frost is October 28.
When should I plant Onion in Warrick County, IN?
In Warrick County, IN, plant Onion after the last frost (around April 6) and before the first frost (around October 28). Best results when soil holds above 50°F.
What growing zone is Warrick County, IN for Onion?
Warrick County sits in USDA Zone 7a. Onion grows reliably in zones 3a through 10b, so it's a good fit here.
Can Onion grow in Warrick County's climate?
Yes — Onion grows well in Warrick County's temperate climate. Warrick County averages a 205-day frost-free season, with last frost around April 6 and first frost around October 28.
Your Warrick County Garden Planner — Free
A 22-page printable planner built for Warrick 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.