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When to plant Radish in Jersey County, IL

Aim to plant Radish in Jersey County on or after March 28; the window stays open through April 18. Jersey County's 193-day frost-free season gives you enough for a full main crop and a short fall succession. A second sowing from August 12 to August 26 extends the harvest into fall.

When to Plant Radish in Jersey County, IL

Radishes are one of the fastest-growing vegetables, with some varieties ready in under a month. They come in round, elongated, and large winter types.

Jersey County, Illinois is in USDA Zone 6b. The average last spring frost is April 11 and the first fall frost is October 21, giving you a growing season of approximately 193 days.

At an elevation of 1,202 feet, Jersey County receives approximately 34.5 inches of rainfall annually with predominantly silt loam soil. Summer highs average 88°F, providing good warmth for Radish during the growing season.

Jersey County, IL (Zone 6b) Moderate season
193 days
Last Spring Frost April 11
193 growing days
First Fall Frost October 21

Jersey County Soil Profile

Soil Type

Silt Loam

Soil pH

6.0-7.0

Drainage

Well Drained

Radish Planting Timeline — Jersey County, IL

Radish Planting Calendar

Activity When Date Range
Direct Sow March 28 Mar 28 – Apr 18
Harvest April 25 Apr 25 – May 16
Fall Sowing August 12 Aug 12 – Aug 26

Plant 0.5" deep · 2" apart · Rows 6" apart

Month-by-Month Timeline

MonthActivities
January
February
March Direct Sow
April Direct Sow Harvest
May Harvest
June
July
August Fall Sowing
September
October
November
December

Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

Moderate — regular watering

📅 Days to Maturity

22–35 days

🧪 Soil pH

Needs 6–7 · Your soil: N/A

🗺️ USDA Zone

Zone 6b

📆 Growing Season

193 days in Jersey County

Growing Tips for Jersey County

Direct sow every 1-2 weeks for continuous harvest. Do not transplant. Harvest spring radishes promptly to prevent them from becoming pithy and hot.

Companion Planting

Good Companions

Avoid Planting Near

  • Hyssop

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Radish in Jersey County, IL?

Jersey County is in Zone 6b with an average last frost of April 11. Plan your Radish planting based on this frost date — see the calendar above for exact timing.

What planting zone is Jersey County, IL?

Jersey County, Illinois is in USDA Hardiness Zone 6b. The average last spring frost is April 11 and first fall frost is October 21.

When should I plant Radish in Jersey County, IL?

In Jersey County, IL, plant Radish after the last frost (around April 11) and before the first frost (around October 21). Best results when soil holds above 50°F.

What growing zone is Jersey County, IL for Radish?

Jersey County sits in USDA Zone 6b. Radish grows reliably in zones 2a through 11b, so it's a good fit here.

Can Radish grow in Jersey County's climate?

Yes — Radish grows well in Jersey County's temperate climate. Jersey County averages a 193-day frost-free season, with last frost around April 11 and first frost around October 21.

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Your Jersey County Garden Planner — Free

A 22-page printable planner built for Jersey 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.

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Data sources: USDA Plant Hardiness Zone Map (2023), NOAA 30-Year Climate Normals. Frost dates are based on 50% probability averages for Jersey County, IL. Local conditions may vary. Last updated: July 2026.

Sources & credits

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