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Broccoli planting and harvest dates

Broccoli Planting Dates in Southern Illinois

Usual broccoli 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.

Broccoli dates in Southern Illinois
ActivityWindowSourceLast verified
TransplantingMarch 27 to April 15, July 15 to 30source2026-11-11
Broccoli calendar for Southern Illinois
ItemJanFebMarAprMayJunJulAugSepOctNovDec
TransplantingTransplanting window in MarchTransplanting window in AprilTransplanting window in July

What these dates mean in Southern Illinois

Transplanting usually runs about 20 days, from Mar 27 to Apr 15.

That start date is about 14 days earlier 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 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

Broccoli dates in other places

Other crops in Southern Illinois

Last reviewed: November 2026. Source: Illinois Extension - When to Plant (Home Vegetable Gardening).