Growing collards 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 collards against those dates.
Start seeds indoorsApril 3
Transplant outdoorsMay 15
Direct sow outdoorsMay 8
Expected harvestJuly 7 to July 27About 60 to 80 days from sowing.
Plant in fallJune 6
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 collards from Clemson Cooperative Extension, Home & Garden Information Center. Zone dates are medians; local conditions vary.