When to plant Onion in Kittson County, MN
Kittson County's climate puts the Onion spring window between May 7 and May 28. be cautious and check the 10-day forecast before planting tender crops. A second sowing from July 8 to July 22 extends the harvest into fall.
When to Plant Onion in Kittson County, MN
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.
Kittson County, Minnesota is in USDA Zone 3b. The average last spring frost is May 14 and the first fall frost is September 30, giving you a growing season of approximately 139 days.
At an elevation of 778 feet, Kittson County receives approximately 40.2 inches of rainfall annually with predominantly silt loam soil. Summer highs average 78°F, so choose short-season varieties of Onion to ensure they mature before fall.
Kittson County Soil Profile
Soil Type
Silt Loam
Soil pH
6.0-7.0
Drainage
Well Drained
Onion Planting Timeline — Kittson County, MN
Onion Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Start Indoors | April 2 | Apr 2 – Apr 16 |
| Transplant Outdoors | May 14 | May 14 – May 28 |
| Direct Sow | May 7 | May 7 – May 28 |
| Harvest | August 13 | Aug 13 – Sep 17 |
| Fall Sowing | July 8 | Jul 8 – Jul 22 |
Plant 1" deep · 6" apart · Rows 12" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | — |
| February | — |
| March | — |
| April | Start Indoors |
| May | Transplant Outdoors Direct Sow |
| June | — |
| July | Fall Sowing |
| August | 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 3b
📆 Growing Season
139 days in Kittson County
Growing Tips for Kittson 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 Kittson County, MN?
Kittson County is in Zone 3b with an average last frost of May 14. Plan your Onion planting based on this frost date — see the calendar above for exact timing.
What planting zone is Kittson County, MN?
Kittson County, Minnesota is in USDA Hardiness Zone 3b. The average last spring frost is May 14 and first fall frost is September 30.
When should I plant Onion in Kittson County, MN?
In Kittson County, MN, plant Onion after the last frost (around May 14) and before the first frost (around September 30). Best results when soil holds above 50°F.
What growing zone is Kittson County, MN for Onion?
Kittson County sits in USDA Zone 3b. Onion grows reliably in zones 3a through 10b, so it's a good fit here.
Can Onion grow in Kittson County's climate?
Yes — Onion grows well in Kittson County's temperate climate. Kittson County averages a 139-day frost-free season, with last frost around May 14 and first frost around September 30.
Your Kittson County Garden Planner — Free
A 22-page printable planner built for Kittson County (Zone 3b). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.