Stinging nettle

Urtica dioica

Fierce-looking perennial with stinging hairs that hide one of the most nutritious wild greens. Young shoots cook into a spinach-like vegetable; mature plant is anti-inflammatory.

Hardiness ratings

Stinging nettle hardiness across the four zone systems
SystemRatingTemperature rangeHow to read it
USDA hardiness zone Zone 2–9 −45.6 °C to −1.1 °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 2–9 −40 °C and warmer Plant tolerates down to this zone
Australian (ANBG) zone Zone 1–5 −15 °C to 10 °C Plant tolerates down to this zone

Growing notes

  • Wear gloves to harvest — formic acid in the trichomes causes the sting
  • Sting deactivates immediately on cooking, drying, or wilting
  • Critical host plant for red admiral, peacock, comma, and small tortoiseshell butterfly larvae
  • Always consult a qualified medical or herbal practitioner before using any plant medicinally

Categories

Related plants

Cross-check Stinging nettle against your zones

Reference

Stinging nettle on Wikipedia