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Sprout Authority

Growing sweet corn in zone 6b

In USDA zone 6b, the typical last spring frost is April 23 and the first fall frost is October 22. Here is when to plant sweet corn against those dates.

Direct sow outdoorsApril 23 to May 7
Expected harvestJune 22 to August 5About 60 to 90 days from sowing.

These are zone 6b averages

Computed from 5,242 ZIP codes in zone 6b. Your town's frost dates vary; enter your ZIP for dates built on your nearest weather station.

Get my exact dates

USDA Plant Hardiness Zone Map, 2023. USDA Agricultural Research Service / Oregon State University PRISM Group. NOAA National Centers for Environmental Information, U.S. Climate Normals 1991-2020. Planting windows for sweet corn from University of Minnesota Extension. Zone dates are medians; local conditions vary.