Growing collards 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 collards against those dates.
Start seeds indoorsFebruary 26
Transplant outdoorsApril 9
Direct sow outdoorsApril 2
Expected harvestJune 1 to June 21About 60 to 80 days from sowing.
Plant in fallJuly 23
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 collards from Clemson Cooperative Extension, Home & Garden Information Center. Zone dates are medians; local conditions vary.