Growing collards in zone 6a
In USDA zone 6a, the typical last spring frost is April 29 and the first fall frost is October 16. Here is when to plant collards against those dates.
Start seeds indoorsMarch 4
Transplant outdoorsApril 15
Direct sow outdoorsApril 8
Expected harvestJune 7 to June 27About 60 to 80 days from sowing.
Plant in fallJuly 17
These are zone 6a averages
Computed from 5,156 ZIP codes in zone 6a. 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.