When to Plant Sunchoke in Yell County, AR
Sunchokes (Jerusalem artichokes) are a native sunflower relative grown for their knobby, nutty-flavored tubers. They are extremely productive and nearly impossible to eradicate.
Yell County, Arkansas is in USDA Zone 7a. The average last spring frost is March 26 and the first fall frost is November 6, giving you a growing season of approximately 225 days.
At an elevation of 1,105 feet, Yell County receives approximately 52 inches of rainfall annually with predominantly silt loam soil. Summer highs average 88°F, providing good warmth for Sunchoke during the growing season. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Sunchoke root diseases.
Yell County Soil Profile
Soil Type
Silt Loam
Soil pH
5.5-7
Drainage
Well Drained
Plant Planting Risk Windows
Percentages indicate frost risk at transplant. The 70% safe window means there is a 30% chance of frost after transplant — suitable for cold-hardy crops or gardeners with frost protection. The 90% safe window is best for tender plants.
Plant Water Budget
Sunchoke Planting Timeline — Yell County, AR
Sunchoke Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Transplant Outdoors | April 9 | Apr 9 – Apr 23 |
| Harvest | July 30 | Jul 30 – Sep 24 |
Plant 1" deep · 30" apart · Rows 42" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | — |
| February | — |
| March | — |
| April | Transplant Outdoors |
| May | — |
| June | — |
| July | Harvest |
| 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
6 – 7.5
USDA Zone
Zone 7a
Growing Season
225 days
Growing Tips for Yell 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
Level Up Your Garden
Sunchoke in Other Locations
Frequently Asked Questions
When should I plant Sunchoke in Yell County, AR?
Yell County is in Zone 7a with an average last frost of March 26. Plan your Sunchoke planting based on this frost date — see the calendar above for exact timing.
What planting zone is Yell County, AR?
Yell County, Arkansas is in USDA Hardiness Zone 7a. The average last spring frost is March 26 and first fall frost is November 6.
Plan Your Garden with Confidence
Get our free Garden Planner — designed to help Yell County gardeners in Zone 7a organize planting dates, track what's growing, and never miss a planting window.
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