Ginseng — American (Panax quinquefolius) – hardiness zones in USDA, RHS, Canadian & Australian systems

North American cousin of Asian ginseng — cooler-climate, gentler tonic, and historically over-harvested from eastern US deciduous forests.

Hardiness ratings

Ginseng — American hardiness across the four zone systems
System	Rating	Temperature range	How to read it
USDA hardiness zone	Zone 3–7	−40 °C to −12.2 °C	Plant tolerates down to this zone
RHS hardiness rating	H7	down to −20 °C	Plant needs at least this level of cold tolerance
Canadian plant hardiness zone	Zone 3–7	−34 °C to −7 °C	Plant tolerates down to this zone
Australian (ANBG) zone	Zone 1–3	−15 °C to 0 °C	Plant tolerates down to this zone

Endangered in the wild — use only cultivated sources
Like Asian ginseng, requires shade and 4–6 years to maturity
Always consult a qualified medical or herbal practitioner before using any plant medicinally