When to plant Sunchoke in Oregon County, MO
Oregon County's 209-day season only supports one Sunchoke planting per year. Sow between April 15 and April 29 for the best chance at full maturity before October 27.
When to Plant Sunchoke in Oregon County, MO
Sunchokes (Jerusalem artichokes) are a native sunflower relative grown for their knobby, nutty-flavored tubers. They are extremely productive and nearly impossible to eradicate.
Oregon County, Missouri is in USDA Zone 7a. The average last spring frost is April 1 and the first fall frost is October 27, giving you a growing season of approximately 209 days.
At an elevation of 1,372 feet, Oregon County receives approximately 30.7 inches of rainfall annually with predominantly silt loam soil. Summer highs average 90°F, providing good warmth for Sunchoke during the growing season.
Oregon County Soil Profile
Soil Type
Silt Loam
Soil pH
6.0-7.0
Drainage
Well Drained
Sunchoke Planting Timeline — Oregon County, MO
Sunchoke Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Transplant Outdoors | April 15 | Apr 15 – Apr 29 |
| Harvest | August 5 | Aug 5 – Sep 30 |
Plant 1" deep · 30" apart · Rows 42" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | — |
| February | — |
| March | — |
| April | Transplant Outdoors |
| May | — |
| June | — |
| July | — |
| August | Harvest |
| September | Harvest |
| October | — |
| November | — |
| December | — |
Growing Conditions
☀️ Sun
Full Sun (6-8+ hours)
💧 Water
Moderate — regular watering
📅 Days to Maturity
110–150 days
🧪 Soil pH
Needs 6–7.5 · Your soil: N/A
🗺️ USDA Zone
Zone 7a
📆 Growing Season
209 days in Oregon County
Growing Tips for Oregon County
Plant tubers 4 inches deep in early spring. Contain plants with barriers as they spread aggressively. Harvest after frost or leave in ground and dig as needed through winter.
Companion Planting
Good Companions
Check more plant combinations with our Companion Planting Checker →
Sunchoke in Other Locations
Frequently Asked Questions
When should I plant Sunchoke in Oregon County, MO?
Oregon County is in Zone 7a with an average last frost of April 1. Plan your Sunchoke planting based on this frost date — see the calendar above for exact timing.
What planting zone is Oregon County, MO?
Oregon County, Missouri is in USDA Hardiness Zone 7a. The average last spring frost is April 1 and first fall frost is October 27.
When should I plant Sunchoke in Oregon County, MO?
In Oregon County, MO, plant Sunchoke after the last frost (around April 1) and before the first frost (around October 27). Best results when soil holds above 50°F.
What growing zone is Oregon County, MO for Sunchoke?
Oregon County sits in USDA Zone 7a. Sunchoke grows reliably in zones 3a through 9b, so it's a good fit here.
Can Sunchoke grow in Oregon County's climate?
Yes — Sunchoke grows well in Oregon County's temperate climate. Oregon County averages a 209-day frost-free season, with last frost around April 1 and first frost around October 27.
Your Oregon County Garden Planner — Free
A 22-page printable planner built for Oregon 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.