When to Plant Sweet Potatoes in USDA Zone 7b
Zone 7b gardeners: here's your April plan
Welcome to April in Zone 7b. These are the moves that will have the biggest impact on your growing season.
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Get sweet potatoes in the ground
Pinch off the lowest leaves on each seedling before you plant — it reduces water loss while the roots catch up.
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Sow sweet potatoes where they'll grow
Thin ruthlessly once seedlings are up. Crowded roots mean smaller crops from every plant.
Get ahead of May
- Starting indoors: sweet potatoes
Sweet potatoes are a warm-season root crop that produces nutritious, sweet tubers in orange, white, and purple varieties. They need a long, hot growing season.
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.
Sweet Potatoes 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 Sweet Potatoes planting schedule for that location.
Sweet Potatoes Planting Calendar — Zone 7b
| Activity | When | Date Range |
|---|---|---|
| Start Indoors | January 28 | Jan 28 – Feb 11 |
| Transplant Outdoors | April 1 | Apr 1 – Apr 15 |
| Direct Sow | March 25 | Mar 25 – Apr 15 |
| Harvest | July 1 | Jul 1 – Aug 19 |
Plant 1" deep · 15" apart · Rows 24" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | Start Indoors |
| February | Start Indoors |
| March | Direct Sow |
| April | Transplant Outdoors Direct Sow |
| May | — |
| June | — |
| July | Harvest |
| August | Harvest |
| September | — |
| 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
90–120 days
Soil pH
5.5 – 6.5
Zone Temperature Range
°F to °F average annual minimum
Growing Season
235 days (Zone average)
Planting Specifications
| Planting Depth | 1 inches |
| Plant Spacing | 15 inches apart |
| Row Spacing | 24 inches between rows |
Growing Tips for Sweet Potatoes in Zone
Zone has a short growing season (~235 days). Start Sweet Potatoes indoors early and use season-extension techniques like row covers and cold frames.
Plant slips (rooted sprouts) after soil is thoroughly warm. Build raised mounds for better root development. Cure harvested roots at 80-85F for 10 days to develop sweetness.
Companion Planting
Good Companions
Avoid Planting Near
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Saving Sweet Potatoes 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
Sweet Potatoes in Other Zones
Sweet Potatoes 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 Sweet Potatoes in Zone 7b?
In Zone 7b, plan your Sweet Potatoes planting around the average last frost date of March 18. Start seeds indoors around January 28. Direct sow outdoors around March 25. Transplant seedlings around April 1.
Can Sweet Potatoes grow in Zone 7b?
Yes, Sweet Potatoes can grow well in Zone 7b, hardy in USDA zones 5a through 11b. Zone 7b has a growing season of approximately 235 days, which is sufficient for Sweet Potatoes (90-120 days to maturity).
When can I harvest Sweet Potatoes in Zone 7b?
In Zone 7b, expect to harvest Sweet Potatoes from July 1 – August 19. Sweet Potatoes takes 90-120 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 Sweet Potatoes?
Good companion plants for Sweet Potatoes include Green Beans, Thyme, Dill. These companions can help with pest control, pollination, and nutrient sharing.
Your Free Printable Garden Planner
A 24-page printable planner tailored to your zone. Planting dates, monthly task lists, harvest log, seed inventory, and succession charts — everything you need to plan a full season.