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Alfalfa hay planting and harvest dates

Alfalfa hay Planting Dates in Ohio

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

Alfalfa hay dates in Ohio
ActivityWindowSourceLast verified
HarvestMay 17 to Sep 24 usual (most active May 25 to Sep 11)source2026-11-11
Alfalfa hay calendar for Ohio
ItemJanFebMarAprMayJunJulAugSepOctNovDec
HarvestHarvest window, most active in MayHarvest window, most active in JuneHarvest window, most active in JulyHarvest window, most active in AugustHarvest window, most active in September

What these dates mean in Ohio

Harvest usually runs about 131 days, from May 17 to Sep 24.

Frost-date caveat: these are published ranges for Ohio. 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 harvest dates (Oct 2010 edition); planting dates not published for alfalfa in most states. Check your last spring frost and soil temperature, and confirm with your county extension office.

Related guides

Alfalfa hay dates in other places

Other crops in Ohio

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.