Licorice

Glycyrrhiza glabra

Mediterranean leguminous perennial. Sweet roots are a major anti-inflammatory and demulcent in both Western and Chinese traditions; harvest after 3+ years.

Hardiness ratings

Licorice hardiness across the four zone systems
SystemRatingTemperature rangeHow to read it
USDA hardiness zone Zone 6–9 −23.3 °C to −1.1 °C Plant tolerates down to this zone
RHS hardiness rating H6 −20 °C to −15 °C Plant needs at least this level of cold tolerance
Canadian plant hardiness zone Zone 6–9 −18 °C and warmer Plant tolerates down to this zone
Australian (ANBG) zone Zone 2–5 −10 °C to 10 °C Plant tolerates down to this zone

Growing notes

  • Strongly contraindicated with hypertension — glycyrrhizin raises blood pressure
  • Multiple drug interactions including diuretics, corticosteroids, and digoxin
  • Nitrogen-fixing roots benefit surrounding plants
  • Always consult a qualified medical or herbal practitioner before using any plant medicinally

Categories

Related plants

Cross-check Licorice against your zones

Reference

Licorice on Wikipedia