When to plant Potatoes in Champaign County, IL
For Potatoes in Champaign County, the safe spring window opens around April 21 and closes around May 12. Last expected frost is April 14, first fall frost October 19, giving a 188-day growing season.
When to Plant Potatoes in Champaign County, IL
Potatoes are a versatile staple crop that produces tubers underground. They come in hundreds of varieties with varying colors, textures, and maturity dates.
Champaign County, Illinois is in USDA Zone 6a. The average last spring frost is April 14 and the first fall frost is October 19, giving you a growing season of approximately 188 days.
At an elevation of 1,215 feet, Champaign County receives approximately 38.9 inches of rainfall annually with predominantly silt loam soil. Summer highs average 87°F, providing good warmth for Potatoes during the growing season.
Champaign County Soil Profile
Soil Type
Silt Loam
Soil pH
6.0-7.0
Drainage
Well Drained
How Much Potatoes to Grow
For a family of 4, plant approximately 20 potatoes plants in about 40 sq ft. In Champaign County's 188-day season, you'll have plenty of time for a full harvest. Plan your garden layout →
Potatoes Planting Timeline — Champaign County, IL
Potatoes Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Start Indoors | February 17 | Feb 17 – Mar 3 |
| Transplant Outdoors | April 28 | Apr 28 – May 12 |
| Direct Sow | April 21 | Apr 21 – May 12 |
| Harvest | July 7 | Jul 7 – Sep 15 |
Plant 1" deep · 15" apart · Rows 24" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | — |
| February | Start Indoors |
| March | Start Indoors |
| April | Transplant Outdoors Direct Sow |
| May | Transplant Outdoors Direct Sow |
| 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
70–120 days
🧪 Soil pH
Needs 5–6.5 · Your soil: N/A
🗺️ USDA Zone
Zone 6a
📆 Growing Season
188 days in Champaign County
Growing Tips for Champaign County
Plant seed potatoes (not grocery store potatoes) 4 inches deep in spring. Hill soil around stems as plants grow to prevent greening. Stop watering when plants die back.
Companion Planting
Good Companions
Avoid Planting Near
Check more plant combinations with our Companion Planting Checker →
Potatoes in Other Locations
Frequently Asked Questions
When should I plant Potatoes in Champaign County, IL?
Champaign County is in Zone 6a with an average last frost of April 14. Plan your Potatoes planting based on this frost date — see the calendar above for exact timing.
What planting zone is Champaign County, IL?
Champaign County, Illinois is in USDA Hardiness Zone 6a. The average last spring frost is April 14 and first fall frost is October 19.
When should I plant Potatoes in Champaign County, IL?
In Champaign County, IL, plant Potatoes after the last frost (around April 14) and before the first frost (around October 19). Best results when soil holds above 50°F.
What growing zone is Champaign County, IL for Potatoes?
Champaign County sits in USDA Zone 6a. Potatoes grows reliably in zones 3a through 10b, so it's a good fit here.
Can Potatoes grow in Champaign County's climate?
Yes — Potatoes grows well in Champaign County's temperate climate. Champaign County averages a 188-day frost-free season, with last frost around April 14 and first frost around October 19.
Your Champaign County Garden Planner — Free
A 22-page printable planner built for Champaign County (Zone 6a). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.