When to plant Onion in LaPorte County, IN
For LaPorte County, gardeners: plant Onion April 13 through May 4 once soil reads 50°F. A second sowing from August 15 to August 29 extends the harvest into fall.
When to Plant Onion in LaPorte 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.
LaPorte County, Indiana is in USDA Zone 6a. The average last spring frost is April 27 and the first fall frost is October 24, giving you a growing season of approximately 180 days.
At an elevation of 1,120 feet, LaPorte County receives approximately 38.6 inches of rainfall annually with predominantly silt loam soil. Summer highs average 85°F, providing good warmth for Onion during the growing season.
LaPorte County Soil Profile
Soil Type
Silt Loam
Soil pH
6.0-7.0
Drainage
Well Drained
Onion Planting Timeline — LaPorte County, IN
Onion Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Start Indoors | March 23 | Mar 23 – Apr 6 |
| Transplant Outdoors | April 27 | Apr 27 – May 11 |
| Direct Sow | April 13 | Apr 13 – May 4 |
| Harvest | July 27 | Jul 27 – Sep 14 |
| Fall Sowing | August 15 | Aug 15 – Aug 29 |
Plant 1" deep · 6" apart · Rows 12" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | — |
| February | — |
| March | Start Indoors |
| April | Start Indoors Transplant Outdoors Direct Sow |
| May | Transplant Outdoors Direct Sow |
| June | — |
| July | Harvest |
| August | Fall Sowing Harvest |
| September | Harvest |
| 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 6a
📆 Growing Season
180 days in LaPorte County
Growing Tips for LaPorte 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 LaPorte County, IN?
LaPorte County is in Zone 6a with an average last frost of April 27. Plan your Onion planting based on this frost date — see the calendar above for exact timing.
What planting zone is LaPorte County, IN?
LaPorte County, Indiana is in USDA Hardiness Zone 6a. The average last spring frost is April 27 and first fall frost is October 24.
When should I plant Onion in LaPorte County, IN?
In LaPorte County, IN, plant Onion after the last frost (around April 27) and before the first frost (around October 24). Best results when soil holds above 50°F.
What growing zone is LaPorte County, IN for Onion?
LaPorte County sits in USDA Zone 6a. Onion grows reliably in zones 3a through 10b, so it's a good fit here.
Can Onion grow in LaPorte County's climate?
Yes — Onion grows well in LaPorte County's temperate climate. LaPorte County averages a 180-day frost-free season, with last frost around April 27 and first frost around October 24.
Your LaPorte County Garden Planner — Free
A 22-page printable planner built for LaPorte 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.