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Radish planting and harvest datesRadish Planting Dates in Southern Illinois
Usual radish planting periods in Southern Illinois, shown as ranges with their source. Use them to frame a plan, then adjust for your own frost dates and soil temperature.
| Activity | Window | Source | Last verified |
|---|---|---|---|
| Planting | March 20 to May 15, July 15 to Aug. 15 | source | 2026-11-11 |
| Item | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Planting | Planting window in March | Planting window in April | Planting window in May | Planting window in July | Planting window in August |
What these dates mean in Southern Illinois
Planting usually runs about 57 days, from Mar 20 to May 15.
That start date is about 31 days earlier than the middle of the 7 places in this data set that report radish planting dates (Apr 20).
Frost-date caveat: these are published ranges for Southern Illinois. A northern or high-elevation site will run later than a southern or low one, and a cold wet spring can push planting past the window. Planting dates are a general guide; frost dates and local conditions vary. Check your last spring frost and soil temperature, and confirm with your county extension office.
Related guides
Radish dates in other places
- Arkansas
- Central Florida
- Central Illinois
- Minnesota
- New Hampshire
- North Florida
- Northern Illinois
- South Florida
Other crops in Southern Illinois
- Asparagus
- Beets
- Broccoli
- Bush Beans
- Cabbage
- Carrots
- Cauliflower
- Chard
- Corn (home garden)
- Cucumber
- Eggplant
- Endive
- Garlic
- Green onions (sets)
- Kale
- Kohlrabi
- Lettuce
- Muskmelon
- Mustard
- Okra
- Parsnip
- Peas
- Pepper
- Pole Beans
- Potato
- Pumpkin
- Rhubarb
- Rutabaga
- Spinach
- Squash (summer)
- Squash (winter)
- Sweet Potato
- Tomato
- Turnip
- Watermelon
Last reviewed: November 2026. Source: Illinois Extension - When to Plant (Home Vegetable Gardening).