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Broccoli planting and harvest datesBroccoli Planting Dates in Northern Illinois
Usual broccoli planting periods in Northern 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 | April 24 to May 15, July 15 to 30 | source | 2026-11-11 |
| Item | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Transplanting | Transplanting window in April | Transplanting window in May | Transplanting window in July |
What these dates mean in Northern Illinois
Transplanting usually runs about 22 days, from Apr 24 to May 15.
That start date is about 14 days later than the middle of the 3 places in this data set that report broccoli transplanting dates (Apr 10).
Frost-date caveat: these are published ranges for Northern 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
Broccoli dates in other places
- Arkansas
- Central Florida
- Central Illinois
- Central North Carolina
- Central Oregon
- Columbia and Snake River valleys, Oregon
- Eastern North Carolina
- Maricopa County, Arizona
- Minnesota
- New Hampshire
- North Florida
- Oregon Coast
- South Florida
- Southern Illinois
- Western North Carolina
- Western Oregon
- Western valleys (Portland, Roseburg, Medford), Oregon
Other crops in Northern Illinois
- Asparagus
- Beets
- 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
- 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).