Skip to content
Crop Calendar

Home / Planting dates / Corn / Maryland

Corn planting and harvest dates

Corn Planting Dates in Maryland

Usual corn planting and harvest periods in Maryland, shown as ranges with their source. Use them to frame a plan, then adjust for your own frost dates and soil temperature.

Corn dates in Maryland
ActivityWindowSourceLast verified
PlantingApr 20 to Jun 7 usual (most active Apr 30 to May 20)source2026-11-11
HarvestSep 9 to Nov 17 usual (most active Sep 22 to Oct 22)source2026-11-11
Corn calendar for Maryland
ItemJanFebMarAprMayJunJulAugSepOctNovDec
PlantingPlanting window, most active in AprilPlanting window, most active in MayPlanting window in June
HarvestHarvest window, most active in SeptemberHarvest window, most active in OctoberHarvest window in November

What these dates mean in Maryland

Planting usually runs about 49 days, from Apr 20 to Jun 7.

That start date is about 6 days later than the middle of the 41 places in this data set that report corn planting dates (Apr 14).

Harvest usually runs about 70 days, from Sep 9 to Nov 17.

From the start of the planting window to the start of the harvest window is about 142 days in Maryland, a rough guide to how long the crop occupies the bed or field.

Frost-date caveat: these are published ranges for Maryland. 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. Frost dates and local conditions vary; NASS state-level usual dates from 20-year progress data (Oct 2010 edition), begin ~5% and end ~95% complete. Check your last spring frost and soil temperature, and confirm with your county extension office.

Related guides

Corn dates in other places

Other crops in Maryland

Last reviewed: November 2026. Source: USDA NASS, Field Crops Usual Planting and Harvesting Dates (October 2010 edition, copy hosted by Cornell University Mann Library). Dates are the usual start and end of the period when about 5% to 95% of the crop is planted or harvested, from long-run state progress data. They are historic averages, not a forecast.