When to Plant Sunchoke in USDA Zone 7b
Sunchokes (Jerusalem artichokes) are a native sunflower relative grown for their knobby, nutty-flavored tubers. They are extremely productive and nearly impossible to eradicate.
In Zone 7b, the average last spring frost is around March 18 and the first fall frost is around November 8, giving you a growing season of approximately 235 days.
Sunchoke Planting Timeline — Zone 7b
Where Is USDA Zone 7b?
The map below highlights the states that contain Zone 7b. Click any state to see the Sunchoke planting schedule for that location.
Sunchoke Planting Calendar — Zone 7b
| Activity | When | Date Range |
|---|---|---|
| Transplant Outdoors | April 1 | Apr 1 – Apr 15 |
| Harvest | July 22 | Jul 22 – Sep 16 |
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 | — |
Free Zone 7b Planting Calendar PDF
Know exactly when to plant every crop in your zone. Get a printable month-by-month calendar customized for Zone 7b with start dates, transplant windows, and harvest times.
Growing Conditions
Sun
Full Sun (6-8+ hours)
💧 Water
Moderate — regular watering
Days to Maturity
110–150 days
Soil pH
6 – 7.5
Zone Temperature Range
5°F to 10°F average annual minimum
Growing Season
235 days (Zone 7b average)
Planting Specifications
| Planting Depth | 1 inches |
| Plant Spacing | 30 inches apart |
| Row Spacing | 42 inches between rows |
Growing Tips for Sunchoke in Zone 7b
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
Saving Sunchoke Seeds
Recommended for Your Garden
Start seeds indoors with reusable cell trays and humidity domes.
Test your soil pH, nitrogen, phosphorus, and potassium levels before planting.
Keep your garden organized with durable, weather-resistant plant labels.
Related Plants
Sunchoke in Other Zones
Sunchoke by State
- Alabama
- Alaska
- Arizona
- Arkansas
- California
- Colorado
- Connecticut
- Delaware
- Florida
- Georgia
- Hawaii
- Idaho
- Illinois
- Indiana
- Iowa
- Kansas
- Kentucky
- Louisiana
- Maine
- Maryland
- Massachusetts
- Michigan
- Minnesota
- Mississippi
- Missouri
- Montana
- Nebraska
- Nevada
- New Hampshire
- New Jersey
- New Mexico
- New York
- North Carolina
- North Dakota
- Ohio
- Oklahoma
- Oregon
- Pennsylvania
- Rhode Island
- South Carolina
- South Dakota
- Tennessee
- Texas
- Utah
- Vermont
- Virginia
- Washington
- West Virginia
- Wisconsin
- Wyoming
Frequently Asked Questions
When should I plant Sunchoke in Zone 7b?
In Zone 7b, plan your Sunchoke planting around the average last frost date of March 18. Transplant seedlings around April 1.
Can Sunchoke grow in Zone 7b?
Yes, Sunchoke can grow well in Zone 7b, hardy in USDA zones 3a through 9b. Zone 7b has a growing season of approximately 235 days, which is sufficient for Sunchoke (110-150 days to maturity).
When can I harvest Sunchoke in Zone 7b?
In Zone 7b, expect to harvest Sunchoke from July 22 – September 16. Sunchoke takes 110-150 days from planting to harvest.
What is the last frost date for Zone 7b?
The average last spring frost in Zone 7b is around March 18, and the first fall frost is around November 8. This gives a growing season of approximately 235 days. These are 50% probability dates — actual frost dates vary year to year.
What should I plant next to Sunchoke?
Good companion plants for Sunchoke include Corn, Peas, Green Beans. These companions can help with pest control, pollination, and nutrient sharing.
Plan Your Garden with Confidence
Get our free Garden Planner — organize your planting dates for Zone 7b, track your crops, and plan your garden season from seed to harvest.
Get Your Free Garden Planner →Free download. Plan your entire garden season in minutes.