Growing french sorrel in zone 6a

(Zone 6a = an average winter low of -10°F to -5°F.)

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 french sorrel against those dates.

USDA 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 french sorrel from University of Illinois Extension. Zone dates are medians; local conditions vary.