Hellebore

Helleborus orientalis

Winter-flowering shade perennial with leathery evergreen leaves and nodding flowers.

Hardiness ratings

Hellebore hardiness across the four zone systems
SystemRatingTemperature rangeHow to read it
USDA hardiness zone Zone 4–9 −34.4 °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 4–8 −29 °C to −1 °C 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

  • Cut old leaves in late winter to display the flowers
  • Self-seeds readily once established

Pet caution: Hellebore is listed as potentially harmful to cats and/or dogs. Keep pets from grazing on it, and contact a vet if you suspect your animal has eaten some.

Categories

Related plants

Cross-check Hellebore against your zones

Reference

Hellebore on Wikipedia