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Cauliflower planting and harvest datesCauliflower Planting Dates in Southern Illinois
Usual cauliflower 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 |
|---|---|---|---|
| Transplanting | June 27 to July 6 | source | 2026-11-11 |
| Item | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Transplanting | Transplanting window in June | Transplanting window in July |
What these dates mean in Southern Illinois
Transplanting usually runs about 10 days, from Jun 27 to Jul 6.
That start date is about 29 days later than the middle of the 4 places in this data set that report cauliflower transplanting dates (May 29).
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
Cauliflower dates in other places
- Arkansas
- Central Florida
- Central Illinois
- Central North Carolina
- Central Oregon
- Central and higher-elevation Eastern Oregon
- Columbia and Snake River valleys, Oregon
- Eastern North Carolina
- Maricopa County, Arizona
- Minnesota
- New Hampshire
- Northern Illinois
- Oregon Coast
- South Florida
- Western North Carolina
- Western Oregon
- Western valleys (Portland, Roseburg, Medford), Oregon
Other crops in Southern Illinois
- Asparagus
- Beets
- Broccoli
- Bush Beans
- Cabbage
- Carrots
- Chard
- Corn (home garden)
- Cucumber
- Eggplant
- Endive
- Garlic
- Green onions (sets)
- Kale
- Kohlrabi
- Lettuce
- Muskmelon
- Mustard
- Okra
- Parsnip
- Peas
- Pepper
- Pole Beans
- Potato
- Pumpkin
- Radish
- 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).