Growing zucchini in zone 3a
In USDA zone 3a, the typical last spring frost is May 29 and the first fall frost is September 5. Here is when to plant zucchini against those dates.
Direct sow outdoorsMay 29 to June 12
Expected harvestJuly 23 to August 6About 55 to 55 days from sowing.
These are zone 3a averages
Computed from 17 ZIP codes in zone 3a. 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 zucchini from Clemson Cooperative Extension, Home & Garden Information Center. Zone dates are medians; local conditions vary.