Growing watermelon 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 watermelon against those dates.
Transplant outdoorsApril 23 to May 7
Direct sow outdoorsApril 23 to May 7
Expected harvestJuly 17 to August 5About 85 to 90 days from transplanting.
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 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 watermelon from Clemson Cooperative Extension, Home & Garden Information Center. Zone dates are medians; local conditions vary.