When to plant Daikon in Jefferson County, IL
Jefferson County's spring Daikon window runs March 26 through April 16. time plantings around the expected last-frost window for best survival. A second sowing from August 11 to August 25 extends the harvest into fall.
When to Plant Daikon in Jefferson County, IL
Daikon is a large, mild Japanese radish that can grow over a foot long. It is excellent for pickling, stir-fries, and as a soil-breaking cover crop.
Jefferson County, Illinois is in USDA Zone 6b. The average last spring frost is April 9 and the first fall frost is October 20, giving you a growing season of approximately 194 days.
At an elevation of 509 feet, Jefferson County receives approximately 34 inches of rainfall annually with predominantly silt loam soil. Summer highs average 88°F, providing good warmth for Daikon during the growing season.
Jefferson County Soil Profile
Soil Type
Silt Loam
Soil pH
6.0-7.0
Drainage
Well Drained
Daikon Planting Timeline — Jefferson County, IL
Daikon Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Direct Sow | March 26 | Mar 26 – Apr 16 |
| Harvest | May 21 | May 21 – Jun 18 |
| Fall Sowing | August 11 | Aug 11 – Aug 25 |
Plant 0.5" deep · 6" apart · Rows 12" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | — |
| February | — |
| March | Direct Sow |
| April | Direct Sow |
| May | Harvest |
| June | Harvest |
| July | — |
| August | Fall Sowing |
| September | — |
| October | — |
| November | — |
| December | — |
Growing Conditions
☀️ Sun
Full Sun (6-8+ hours)
💧 Water
Moderate — regular watering
📅 Days to Maturity
50–70 days
🧪 Soil pH
Needs 5.8–7 · Your soil: N/A
🗺️ USDA Zone
Zone 6b
📆 Growing Season
194 days in Jefferson County
Growing Tips for Jefferson County
Direct sow in late summer for fall harvest. Loosen soil deeply before planting. Thin seedlings to 6 inches apart. Harvest before hard freeze as exposed shoulders may crack.
Companion Planting
Good Companions
Avoid Planting Near
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Daikon in Other Locations
Frequently Asked Questions
When should I plant Daikon in Jefferson County, IL?
Jefferson County is in Zone 6b with an average last frost of April 9. Plan your Daikon planting based on this frost date — see the calendar above for exact timing.
What planting zone is Jefferson County, IL?
Jefferson County, Illinois is in USDA Hardiness Zone 6b. The average last spring frost is April 9 and first fall frost is October 20.
When should I plant Daikon in Jefferson County, IL?
In Jefferson County, IL, plant Daikon after the last frost (around April 9) and before the first frost (around October 20). Best results when soil holds above 50°F.
What growing zone is Jefferson County, IL for Daikon?
Jefferson County sits in USDA Zone 6b. Daikon grows reliably in zones 2a through 11b, so it's a good fit here.
Can Daikon grow in Jefferson County's climate?
Yes — Daikon grows well in Jefferson County's temperate climate. Jefferson County averages a 194-day frost-free season, with last frost around April 9 and first frost around October 20.
Your Jefferson County Garden Planner — Free
A 22-page printable planner built for Jefferson 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.