When to plant Sweet Potatoes in Wayne County, MI
Plant Sweet Potatoes in Wayne County from May 5 to May 26 in spring. Wayne County sits in USDA Zone 6b, with last frost around April 28 and first frost on October 20.
When to Plant Sweet Potatoes in Wayne County, MI
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.
Wayne County, Michigan is in USDA Zone 6b. The average last spring frost is April 28 and the first fall frost is October 20, giving you a growing season of approximately 175 days.
At an elevation of 1,066 feet, Wayne County receives approximately 34.1 inches of rainfall annually with predominantly silt loam soil. Summer highs average 91°F, providing good warmth for Sweet Potatoes during the growing season.
Wayne County Soil Profile
Soil Type
Silt Loam
Soil pH
6.0-7.0
Drainage
Well Drained
Sweet Potatoes Planting Timeline — Wayne County, MI
Sweet Potatoes Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Start Indoors | March 3 | Mar 3 – Mar 17 |
| Transplant Outdoors | May 12 | May 12 – May 26 |
| Direct Sow | May 5 | May 5 – May 26 |
| Harvest | August 11 | Aug 11 – Sep 29 |
Plant 1" deep · 15" apart · Rows 24" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | — |
| February | — |
| March | Start Indoors |
| April | — |
| May | Transplant Outdoors Direct Sow |
| June | — |
| July | — |
| 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 5.5–6.5 · Your soil: N/A
🗺️ USDA Zone
Zone 6b
📆 Growing Season
175 days in Wayne County
Growing Tips for Wayne County
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
Check more plant combinations with our Companion Planting Checker →
Sweet Potatoes in Other Locations
Frequently Asked Questions
When should I plant Sweet Potatoes in Wayne County, MI?
Wayne County is in Zone 6b with an average last frost of April 28. Plan your Sweet Potatoes planting based on this frost date — see the calendar above for exact timing.
What planting zone is Wayne County, MI?
Wayne County, Michigan is in USDA Hardiness Zone 6b. The average last spring frost is April 28 and first fall frost is October 20.
When should I plant Sweet Potatoes in Wayne County, MI?
In Wayne County, MI, plant Sweet Potatoes after the last frost (around April 28) and before the first frost (around October 20). Best results when soil holds above 50°F.
What growing zone is Wayne County, MI for Sweet Potatoes?
Wayne County sits in USDA Zone 6b. Sweet Potatoes grows reliably in zones 5a through 11b, so it's a good fit here.
Can Sweet Potatoes grow in Wayne County's climate?
Yes — Sweet Potatoes grows well in Wayne County's temperate climate. Wayne County averages a 175-day frost-free season, with last frost around April 28 and first frost around October 20.
Your Wayne County Garden Planner — Free
A 22-page printable planner built for Wayne County (Zone 6b). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.