Growing sweet corn in zone 5b
In USDA zone 5b, the typical last spring frost is May 1 and the first fall frost is October 10. Here is when to plant sweet corn against those dates.
Direct sow outdoorsMay 1 to May 15
Expected harvestJune 30 to August 13About 60 to 90 days from sowing.
These are zone 5b averages
Computed from 2,843 ZIP codes in zone 5b. Your town's frost dates vary; enter your ZIP for dates built on your nearest weather station.
Get my exact datesUSDA 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.